Como converter número para palavras em java


132

Atualmente, temos um mecanismo bruto para converter números em palavras (por exemplo, usando algumas matrizes estáticas) e com base no tamanho do número que traduz isso em um texto em inglês. Mas estamos enfrentando problemas de números enormes.

10183 = Ten thousand one hundred eighty three
90 = Ninety
5888 = Five thousand eight hundred eighty eight

Existe uma função fácil de usar em qualquer uma das bibliotecas de matemática que eu possa usar para esse fim?


1
Aqui é a ferramenta on-line que podem ser úteis para você: helloacm.com/tools/convert-arabic-numerals-to-english-words
doctorlai

Respostas:


106

Aqui está o código, acho que não existe nenhum método no SE.

Basicamente, converte o número em string e analisa String e o associa ao peso

por exemplo

1000

1é tratado como mil posições e 1é mapeado "one"e milhares por causa da posição


Este é o código do site:

Inglês

import java.text.DecimalFormat;

public class EnglishNumberToWords {

  private static final String[] tensNames = {
    "",
    " ten",
    " twenty",
    " thirty",
    " forty",
    " fifty",
    " sixty",
    " seventy",
    " eighty",
    " ninety"
  };

  private static final String[] numNames = {
    "",
    " one",
    " two",
    " three",
    " four",
    " five",
    " six",
    " seven",
    " eight",
    " nine",
    " ten",
    " eleven",
    " twelve",
    " thirteen",
    " fourteen",
    " fifteen",
    " sixteen",
    " seventeen",
    " eighteen",
    " nineteen"
  };

  private EnglishNumberToWords() {}

  private static String convertLessThanOneThousand(int number) {
    String soFar;

    if (number % 100 < 20){
      soFar = numNames[number % 100];
      number /= 100;
    }
    else {
      soFar = numNames[number % 10];
      number /= 10;

      soFar = tensNames[number % 10] + soFar;
      number /= 10;
    }
    if (number == 0) return soFar;
    return numNames[number] + " hundred" + soFar;
  }


  public static String convert(long number) {
    // 0 to 999 999 999 999
    if (number == 0) { return "zero"; }

    String snumber = Long.toString(number);

    // pad with "0"
    String mask = "000000000000";
    DecimalFormat df = new DecimalFormat(mask);
    snumber = df.format(number);

    // XXXnnnnnnnnn
    int billions = Integer.parseInt(snumber.substring(0,3));
    // nnnXXXnnnnnn
    int millions  = Integer.parseInt(snumber.substring(3,6));
    // nnnnnnXXXnnn
    int hundredThousands = Integer.parseInt(snumber.substring(6,9));
    // nnnnnnnnnXXX
    int thousands = Integer.parseInt(snumber.substring(9,12));

    String tradBillions;
    switch (billions) {
    case 0:
      tradBillions = "";
      break;
    case 1 :
      tradBillions = convertLessThanOneThousand(billions)
      + " billion ";
      break;
    default :
      tradBillions = convertLessThanOneThousand(billions)
      + " billion ";
    }
    String result =  tradBillions;

    String tradMillions;
    switch (millions) {
    case 0:
      tradMillions = "";
      break;
    case 1 :
      tradMillions = convertLessThanOneThousand(millions)
         + " million ";
      break;
    default :
      tradMillions = convertLessThanOneThousand(millions)
         + " million ";
    }
    result =  result + tradMillions;

    String tradHundredThousands;
    switch (hundredThousands) {
    case 0:
      tradHundredThousands = "";
      break;
    case 1 :
      tradHundredThousands = "one thousand ";
      break;
    default :
      tradHundredThousands = convertLessThanOneThousand(hundredThousands)
         + " thousand ";
    }
    result =  result + tradHundredThousands;

    String tradThousand;
    tradThousand = convertLessThanOneThousand(thousands);
    result =  result + tradThousand;

    // remove extra spaces!
    return result.replaceAll("^\\s+", "").replaceAll("\\b\\s{2,}\\b", " ");
  }

  /**
   * testing
   * @param args
   */
  public static void main(String[] args) {
    System.out.println("*** " + EnglishNumberToWords.convert(0));
    System.out.println("*** " + EnglishNumberToWords.convert(1));
    System.out.println("*** " + EnglishNumberToWords.convert(16));
    System.out.println("*** " + EnglishNumberToWords.convert(100));
    System.out.println("*** " + EnglishNumberToWords.convert(118));
    System.out.println("*** " + EnglishNumberToWords.convert(200));
    System.out.println("*** " + EnglishNumberToWords.convert(219));
    System.out.println("*** " + EnglishNumberToWords.convert(800));
    System.out.println("*** " + EnglishNumberToWords.convert(801));
    System.out.println("*** " + EnglishNumberToWords.convert(1316));
    System.out.println("*** " + EnglishNumberToWords.convert(1000000));
    System.out.println("*** " + EnglishNumberToWords.convert(2000000));
    System.out.println("*** " + EnglishNumberToWords.convert(3000200));
    System.out.println("*** " + EnglishNumberToWords.convert(700000));
    System.out.println("*** " + EnglishNumberToWords.convert(9000000));
    System.out.println("*** " + EnglishNumberToWords.convert(9001000));
    System.out.println("*** " + EnglishNumberToWords.convert(123456789));
    System.out.println("*** " + EnglishNumberToWords.convert(2147483647));
    System.out.println("*** " + EnglishNumberToWords.convert(3000000010L));

    /*
     *** zero
     *** one
     *** sixteen
     *** one hundred
     *** one hundred eighteen
     *** two hundred
     *** two hundred nineteen
     *** eight hundred
     *** eight hundred one
     *** one thousand three hundred sixteen
     *** one million
     *** two millions
     *** three millions two hundred
     *** seven hundred thousand
     *** nine millions
     *** nine millions one thousand
     *** one hundred twenty three millions four hundred
     **      fifty six thousand seven hundred eighty nine
     *** two billion one hundred forty seven millions
     **      four hundred eighty three thousand six hundred forty seven
     *** three billion ten
     **/
  }
}

Français Muito diferente da versão em inglês, mas o francês é muito mais difícil!

package com.rgagnon.howto;

import java.text.*;

class FrenchNumberToWords {
  private static final String[] dizaineNames = {
    "",
    "",
    "vingt",
    "trente",
    "quarante",
    "cinquante",
    "soixante",
    "soixante",
    "quatre-vingt",
    "quatre-vingt"
  };

  private static final String[] uniteNames1 = {
    "",
    "un",
    "deux",
    "trois",
    "quatre",
    "cinq",
    "six",
    "sept",
    "huit",
    "neuf",
    "dix",
    "onze",
    "douze",
    "treize",
    "quatorze",
    "quinze",
    "seize",
    "dix-sept",
    "dix-huit",
    "dix-neuf"
  };

  private static final String[] uniteNames2 = {
    "",
    "",
    "deux",
    "trois",
    "quatre",
    "cinq",
    "six",
    "sept",
    "huit",
    "neuf",
    "dix"
  };

  private FrenchNumberToWords() {}

  private static String convertZeroToHundred(int number) {

    int laDizaine = number / 10;
    int lUnite = number % 10;
    String resultat = "";

    switch (laDizaine) {
    case 1 :
    case 7 :
    case 9 :
      lUnite = lUnite + 10;
      break;
    default:
    }

    // séparateur "-" "et"  ""
    String laLiaison = "";
    if (laDizaine > 1) {
      laLiaison = "-";
    }
    // cas particuliers
    switch (lUnite) {
    case 0:
      laLiaison = "";
      break;
    case 1 :
      if (laDizaine == 8) {
        laLiaison = "-";
      }
      else {
        laLiaison = " et ";
      }
      break;
    case 11 :
      if (laDizaine==7) {
        laLiaison = " et ";
      }
      break;
    default:
    }

    // dizaines en lettres
    switch (laDizaine) {
    case 0:
      resultat = uniteNames1[lUnite];
      break;
    case 8 :
      if (lUnite == 0) {
        resultat = dizaineNames[laDizaine];
      }
      else {
        resultat = dizaineNames[laDizaine]
                                + laLiaison + uniteNames1[lUnite];
      }
      break;
    default :
      resultat = dizaineNames[laDizaine]
                              + laLiaison + uniteNames1[lUnite];
    }
    return resultat;
  }

  private static String convertLessThanOneThousand(int number) {

    int lesCentaines = number / 100;
    int leReste = number % 100;
    String sReste = convertZeroToHundred(leReste);

    String resultat;
    switch (lesCentaines) {
    case 0:
      resultat = sReste;
      break;
    case 1 :
      if (leReste > 0) {
        resultat = "cent " + sReste;
      }
      else {
        resultat = "cent";
      }
      break;
    default :
      if (leReste > 0) {
        resultat = uniteNames2[lesCentaines] + " cent " + sReste;
      }
      else {
        resultat = uniteNames2[lesCentaines] + " cents";
      }
    }
    return resultat;
  }

  public static String convert(long number) {
    // 0 à 999 999 999 999
    if (number == 0) { return "zéro"; }

    String snumber = Long.toString(number);

    // pad des "0"
    String mask = "000000000000";
    DecimalFormat df = new DecimalFormat(mask);
    snumber = df.format(number);

    // XXXnnnnnnnnn
    int lesMilliards = Integer.parseInt(snumber.substring(0,3));
    // nnnXXXnnnnnn
    int lesMillions  = Integer.parseInt(snumber.substring(3,6));
    // nnnnnnXXXnnn
    int lesCentMille = Integer.parseInt(snumber.substring(6,9));
    // nnnnnnnnnXXX
    int lesMille = Integer.parseInt(snumber.substring(9,12));

    String tradMilliards;
    switch (lesMilliards) {
    case 0:
      tradMilliards = "";
      break;
    case 1 :
      tradMilliards = convertLessThanOneThousand(lesMilliards)
         + " milliard ";
      break;
    default :
      tradMilliards = convertLessThanOneThousand(lesMilliards)
         + " milliards ";
    }
    String resultat =  tradMilliards;

    String tradMillions;
    switch (lesMillions) {
    case 0:
      tradMillions = "";
      break;
    case 1 :
      tradMillions = convertLessThanOneThousand(lesMillions)
         + " million ";
      break;
    default :
      tradMillions = convertLessThanOneThousand(lesMillions)
         + " millions ";
    }
    resultat =  resultat + tradMillions;

    String tradCentMille;
    switch (lesCentMille) {
    case 0:
      tradCentMille = "";
      break;
    case 1 :
      tradCentMille = "mille ";
      break;
    default :
      tradCentMille = convertLessThanOneThousand(lesCentMille)
         + " mille ";
    }
    resultat =  resultat + tradCentMille;

    String tradMille;
    tradMille = convertLessThanOneThousand(lesMille);
    resultat =  resultat + tradMille;

    return resultat;
  }

  public static void main(String[] args) {
    System.out.println("*** " + FrenchNumberToWords.convert(0));
    System.out.println("*** " + FrenchNumberToWords.convert(9));
    System.out.println("*** " + FrenchNumberToWords.convert(19));
    System.out.println("*** " + FrenchNumberToWords.convert(21));
    System.out.println("*** " + FrenchNumberToWords.convert(28));
    System.out.println("*** " + FrenchNumberToWords.convert(71));
    System.out.println("*** " + FrenchNumberToWords.convert(72));
    System.out.println("*** " + FrenchNumberToWords.convert(80));
    System.out.println("*** " + FrenchNumberToWords.convert(81));
    System.out.println("*** " + FrenchNumberToWords.convert(89));
    System.out.println("*** " + FrenchNumberToWords.convert(90));
    System.out.println("*** " + FrenchNumberToWords.convert(91));
    System.out.println("*** " + FrenchNumberToWords.convert(97));
    System.out.println("*** " + FrenchNumberToWords.convert(100));
    System.out.println("*** " + FrenchNumberToWords.convert(101));
    System.out.println("*** " + FrenchNumberToWords.convert(110));
    System.out.println("*** " + FrenchNumberToWords.convert(120));
    System.out.println("*** " + FrenchNumberToWords.convert(200));
    System.out.println("*** " + FrenchNumberToWords.convert(201));
    System.out.println("*** " + FrenchNumberToWords.convert(232));
    System.out.println("*** " + FrenchNumberToWords.convert(999));
    System.out.println("*** " + FrenchNumberToWords.convert(1000));
    System.out.println("*** " + FrenchNumberToWords.convert(1001));
    System.out.println("*** " + FrenchNumberToWords.convert(10000));
    System.out.println("*** " + FrenchNumberToWords.convert(10001));
    System.out.println("*** " + FrenchNumberToWords.convert(100000));
    System.out.println("*** " + FrenchNumberToWords.convert(2000000));
    System.out.println("*** " + FrenchNumberToWords.convert(3000000000L));
    System.out.println("*** " + FrenchNumberToWords.convert(2147483647));
    /*
     *** OUTPUT
     *** zéro
     *** neuf
     *** dix-neuf
     *** vingt et un
     *** vingt-huit
     *** soixante et onze
     *** soixante-douze
     *** quatre-vingt
     *** quatre-vingt-un
     *** quatre-vingt-neuf
     *** quatre-vingt-dix
     *** quatre-vingt-onze
     *** quatre-vingt-dix-sept
     *** cent
     *** cent un
     *** cent dix
     *** cent vingt
     *** deux cents
     *** deux cent un
     *** deux cent trente-deux
     *** neuf cent quatre-vingt-dix-neuf
     *** mille
     *** mille un
     *** dix mille
     *** dix mille un
     *** cent mille
     *** deux millions
     *** trois milliards
     *** deux milliards cent quarante-sept millions
     **          quatre cent quatre-vingt-trois mille six cent quarante-sept
     */
  }
}

Você pode lidar com a conversão "dólar e centavo" chamando o método "convert" duas vezes.

String phrase = "12345.67" ;
Float num = new Float( phrase ) ;
int dollars = (int)Math.floor( num ) ;
int cent = (int)Math.floor( ( num - dollars ) * 100.0f ) ;

String s = "$ " + EnglishNumberToWords.convert( dollars ) + " and "
           + EnglishNumberToWords.convert( cent ) + " cents" ;

Outra maneira de usar uma função interna do seu DBMS (se disponível). Para Oracle

SQL> select to_char(to_date(873,'J'), 'JSP') as converted_form from dual;

CONVERTED_FORM
---------------------------
EIGHT HUNDRED SEVENTY-THREE

SQL>
'JSP' means :
J : the Julian format.
SP : spells the word for the number passed to to_date

9
Método limitado: não converte números grandes nem suporta números decimais.
Marcolopes

10
Embora essa resposta tenha mais de três anos, seria útil se você incluísse partes essenciais do link aqui, caso o link não esteja disponível.
Taryn

1
Peguei seu código para a versão em francês e o transformei em groovy, enquanto o fazia funcionar para números maiores. É muito fácil fazê-lo funcionar com outros ainda maiores. Caso alguém esteja interessado, é aqui . Obrigado pelo material de base!
sensei

Programa dá saída errada quando você entra 100500 mas em casos de descanso funciona bem
adesh singh

@adeshsingh enquanto você estiver lá. você pode corrigir o código e atualizar a resposta. este foi ~ código de 7 anos
Jigar Joshi

61

Como você não pode ter um algoritmo geral para cada localidade, não. Você precisa implementar seu próprio algoritmo para todos os códigos de idioma suportados.

** EDIT **

Apenas para o inferno, eu brinquei até chegar a esta aula. Ele não pode ser exibido Long.MIN_VALUEdevido a restrições de bits ... mas presumo que possa ser modificado e altere os longtipos de valor para doublenúmeros decimais ou até maioresEle pode exibir qualquer número com até 66 dígitos e 26 casas decimais usando uma representação de sequência do número. Você pode adicionar mais ScaleUnitpara mais casas decimais ...

/**
 * This class will convert numeric values into an english representation
 * 
 * For units, see : http://www.jimloy.com/math/billion.htm
 * 
 * @author yanick.rochon@gmail.com
 */
public class NumberToWords {

    static public class ScaleUnit {
        private int exponent;
        private String[] names;
        private ScaleUnit(int exponent, String...names) {
            this.exponent = exponent;
            this.names = names;
        }
        public int getExponent() {
            return exponent;
        }
        public String getName(int index) {
            return names[index];
        }
    }

    /**
     * See http://www.wordiq.com/definition/Names_of_large_numbers
     */
    static private ScaleUnit[] SCALE_UNITS = new ScaleUnit[] {
        new ScaleUnit(63, "vigintillion", "decilliard"),
        new ScaleUnit(60, "novemdecillion", "decillion"),
        new ScaleUnit(57, "octodecillion", "nonilliard"),
        new ScaleUnit(54, "septendecillion", "nonillion"),
        new ScaleUnit(51, "sexdecillion", "octilliard"),
        new ScaleUnit(48, "quindecillion", "octillion"),
        new ScaleUnit(45, "quattuordecillion", "septilliard"),
        new ScaleUnit(42, "tredecillion", "septillion"),
        new ScaleUnit(39, "duodecillion", "sextilliard"),
        new ScaleUnit(36, "undecillion", "sextillion"),
        new ScaleUnit(33, "decillion", "quintilliard"),
        new ScaleUnit(30, "nonillion", "quintillion"),
        new ScaleUnit(27, "octillion", "quadrilliard"),
        new ScaleUnit(24, "septillion", "quadrillion"),
        new ScaleUnit(21, "sextillion", "trilliard"),
        new ScaleUnit(18, "quintillion", "trillion"),
        new ScaleUnit(15, "quadrillion", "billiard"),
        new ScaleUnit(12, "trillion", "billion"),
        new ScaleUnit(9, "billion", "milliard"),
        new ScaleUnit(6, "million", "million"),
        new ScaleUnit(3, "thousand", "thousand"),
        new ScaleUnit(2, "hundred", "hundred"),
        //new ScaleUnit(1, "ten", "ten"),
        //new ScaleUnit(0, "one", "one"),
        new ScaleUnit(-1, "tenth", "tenth"),
        new ScaleUnit(-2, "hundredth", "hundredth"),
        new ScaleUnit(-3, "thousandth", "thousandth"),
        new ScaleUnit(-4, "ten-thousandth", "ten-thousandth"),
        new ScaleUnit(-5, "hundred-thousandth", "hundred-thousandth"),
        new ScaleUnit(-6, "millionth", "millionth"),
        new ScaleUnit(-7, "ten-millionth", "ten-millionth"),
        new ScaleUnit(-8, "hundred-millionth", "hundred-millionth"),
        new ScaleUnit(-9, "billionth", "milliardth"),
        new ScaleUnit(-10, "ten-billionth", "ten-milliardth"),
        new ScaleUnit(-11, "hundred-billionth", "hundred-milliardth"),
        new ScaleUnit(-12, "trillionth", "billionth"),
        new ScaleUnit(-13, "ten-trillionth", "ten-billionth"),
        new ScaleUnit(-14, "hundred-trillionth", "hundred-billionth"),
        new ScaleUnit(-15, "quadrillionth", "billiardth"),
        new ScaleUnit(-16, "ten-quadrillionth", "ten-billiardth"),
        new ScaleUnit(-17, "hundred-quadrillionth", "hundred-billiardth"),
        new ScaleUnit(-18, "quintillionth", "trillionth"),
        new ScaleUnit(-19, "ten-quintillionth", "ten-trillionth"),
        new ScaleUnit(-20, "hundred-quintillionth", "hundred-trillionth"),
        new ScaleUnit(-21, "sextillionth", "trilliardth"),
        new ScaleUnit(-22, "ten-sextillionth", "ten-trilliardth"),
        new ScaleUnit(-23, "hundred-sextillionth", "hundred-trilliardth"),
        new ScaleUnit(-24, "septillionth","quadrillionth"),
        new ScaleUnit(-25, "ten-septillionth","ten-quadrillionth"),
        new ScaleUnit(-26, "hundred-septillionth","hundred-quadrillionth"),
    };

    static public enum Scale {
        SHORT,
        LONG;

        public String getName(int exponent) {
            for (ScaleUnit unit : SCALE_UNITS) {
                if (unit.getExponent() == exponent) {
                    return unit.getName(this.ordinal());
                }
            }
            return ""; 
        }
    }

    /**
     * Change this scale to support American and modern British value (short scale)
     * or Traditional British value (long scale)
     */
    static public Scale SCALE = Scale.SHORT; 


    static abstract public class AbstractProcessor {

        static protected final String SEPARATOR = " ";
        static protected final int NO_VALUE = -1;

        protected List<Integer> getDigits(long value) {
            ArrayList<Integer> digits = new ArrayList<Integer>();
            if (value == 0) {
                digits.add(0);
            } else {
                while (value > 0) {
                    digits.add(0, (int) value % 10);
                    value /= 10;
                }
            }
            return digits;
        }

        public String getName(long value) {
            return getName(Long.toString(value));
        }

        public String getName(double value) {
            return getName(Double.toString(value));
        }

        abstract public String getName(String value);
    }

    static public class UnitProcessor extends AbstractProcessor {

        static private final String[] TOKENS = new String[] {
            "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
            "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"
        };

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();

            int offset = NO_VALUE;
            int number;
            if (value.length() > 3) {
                number = Integer.valueOf(value.substring(value.length() - 3), 10);
            } else {
                number = Integer.valueOf(value, 10);
            }
            number %= 100;
            if (number < 10) {
                offset = (number % 10) - 1;
                //number /= 10;
            } else if (number < 20) {
                offset = (number % 20) - 1;
                //number /= 100;
            }

            if (offset != NO_VALUE && offset < TOKENS.length) {
                buffer.append(TOKENS[offset]);
            }

            return buffer.toString();
        }

    }

    static public class TensProcessor extends AbstractProcessor {

        static private final String[] TOKENS = new String[] {
            "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"
        };

        static private final String UNION_SEPARATOR = "-";

        private UnitProcessor unitProcessor = new UnitProcessor();

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();
            boolean tensFound = false;

            int number;
            if (value.length() > 3) {
                number = Integer.valueOf(value.substring(value.length() - 3), 10);
            } else {
                number = Integer.valueOf(value, 10);
            }
            number %= 100;   // keep only two digits
            if (number >= 20) {
                buffer.append(TOKENS[(number / 10) - 2]);
                number %= 10;
                tensFound = true;
            } else {
                number %= 20;
            }

            if (number != 0) {
                if (tensFound) {
                    buffer.append(UNION_SEPARATOR);
                }
                buffer.append(unitProcessor.getName(number));
            }

            return buffer.toString();
        }
    }

    static public class HundredProcessor extends AbstractProcessor {

        private int EXPONENT = 2;

        private UnitProcessor unitProcessor = new UnitProcessor();
        private TensProcessor tensProcessor = new TensProcessor();

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();

            int number;
            if (value.isEmpty()) {
                number = 0;
            } else if (value.length() > 4) {
                number = Integer.valueOf(value.substring(value.length() - 4), 10);
            } else {
                number = Integer.valueOf(value, 10);
            }
            number %= 1000;  // keep at least three digits

            if (number >= 100) {
                buffer.append(unitProcessor.getName(number / 100));
                buffer.append(SEPARATOR);
                buffer.append(SCALE.getName(EXPONENT));
            }

            String tensName = tensProcessor.getName(number % 100);

            if (!tensName.isEmpty() && (number >= 100)) {
                buffer.append(SEPARATOR);
            }
            buffer.append(tensName);

            return buffer.toString();
        }
    }

    static public class CompositeBigProcessor extends AbstractProcessor {

        private HundredProcessor hundredProcessor = new HundredProcessor();
        private AbstractProcessor lowProcessor;
        private int exponent;

        public CompositeBigProcessor(int exponent) {
            if (exponent <= 3) {
                lowProcessor = hundredProcessor;
            } else {
                lowProcessor = new CompositeBigProcessor(exponent - 3);
            }
            this.exponent = exponent;
        }

        public String getToken() {
            return SCALE.getName(getPartDivider());
        }

        protected AbstractProcessor getHighProcessor() {
            return hundredProcessor;
        }

        protected AbstractProcessor getLowProcessor() {
            return lowProcessor;
        }

        public int getPartDivider() {
            return exponent;
        }

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();

            String high, low;
            if (value.length() < getPartDivider()) {
                high = "";
                low = value;
            } else {
                int index = value.length() - getPartDivider();
                high = value.substring(0, index);
                low = value.substring(index);
            }

            String highName = getHighProcessor().getName(high);
            String lowName = getLowProcessor().getName(low);

            if (!highName.isEmpty()) {
                buffer.append(highName);
                buffer.append(SEPARATOR);
                buffer.append(getToken());

                if (!lowName.isEmpty()) {
                    buffer.append(SEPARATOR);
                }
            }

            if (!lowName.isEmpty()) {
                buffer.append(lowName);
            }

            return buffer.toString();
        }
    }

    static public class DefaultProcessor extends AbstractProcessor {

        static private String MINUS = "minus";
        static private String UNION_AND = "and";

        static private String ZERO_TOKEN = "zero";

        private AbstractProcessor processor = new CompositeBigProcessor(63);

        @Override
        public String getName(String value) {
            boolean negative = false;
            if (value.startsWith("-")) {
                negative = true;
                value = value.substring(1);
            }

            int decimals = value.indexOf(".");
            String decimalValue = null;
            if (0 <= decimals) {
                decimalValue = value.substring(decimals + 1);
                value = value.substring(0, decimals);
            }

            String name = processor.getName(value);

            if (name.isEmpty()) {
                name = ZERO_TOKEN;
            } else if (negative) {
                name = MINUS.concat(SEPARATOR).concat(name); 
            }

            if (!(null == decimalValue || decimalValue.isEmpty())) {
                name = name.concat(SEPARATOR).concat(UNION_AND).concat(SEPARATOR)
                    .concat(processor.getName(decimalValue))
                    .concat(SEPARATOR).concat(SCALE.getName(-decimalValue.length()));
            }

            return name;
        }

    }

    static public AbstractProcessor processor;


    public static void main(String...args) {

        processor = new DefaultProcessor();

        long[] values = new long[] {
            0,
            4,
            10,
            12,
            100,
            108,
            299,
            1000,
            1003,
            2040,
            45213,
            100000,
            100005,
            100010,
            202020,
            202022,
            999999,
            1000000,
            1000001,
            10000000,
            10000007,
            99999999,
            Long.MAX_VALUE,
            Long.MIN_VALUE
        };

        String[] strValues = new String[] {
            "0001.2",
            "3.141592"
        };

        for (long val : values) {
            System.out.println(val + " = " + processor.getName(val) );
        }

        for (String strVal : strValues) {
            System.out.println(strVal + " = " + processor.getName(strVal) );
        }

        // generate a very big number...
        StringBuilder bigNumber = new StringBuilder();
        for (int d=0; d<66; d++) {
            bigNumber.append( (char) ((Math.random() * 10) + '0'));
        }
        bigNumber.append(".");
        for (int d=0; d<26; d++) {
            bigNumber.append( (char) ((Math.random() * 10) + '0'));
        }

        System.out.println(bigNumber.toString() + " = " + processor.getName(bigNumber.toString()));

    }

}

e uma saída de amostra (para o gerador aleatório de grandes números)

0 = zero
4 = four
10 = ten
12 = twelve
100 = one hundred
108 = one hundred eight
299 = two hundred ninety-nine
1000 = one thousand
1003 = one thousand three
2040 = two thousand fourty
45213 = fourty-five thousand two hundred thirteen
100000 = one hundred thousand
100005 = one hundred thousand five
100010 = one hundred thousand ten
202020 = two hundred two thousand twenty
202022 = two hundred two thousand twenty-two
999999 = nine hundred ninety-nine thousand nine hundred ninety-nine
1000000 = one million
1000001 = one million one
10000000 = ten million
10000007 = ten million seven
99999999 = ninety-nine million nine hundred ninety-nine thousand nine hundred ninety-nine
9223372036854775807 = nine quintillion two hundred twenty-three quadrillion three hundred seventy-two trillion thirty-six billion eight hundred fifty-four million seven hundred seventy-five thousand eight hundred seven
-9223372036854775808 = minus nine quintillion two hundred twenty-three quadrillion three hundred seventy-two trillion thirty-six billion eight hundred fifty-four million seven hundred seventy-five thousand eight hundred eight
0001.2 = one and two tenth
3.141592 = three and one hundred fourty-one thousand five hundred ninety-two millionth
694780458103427072928672912656674465845126458162617425283733729646.85695031739734695391404376 = six hundred ninety-four vigintillion seven hundred eighty novemdecillion four hundred fifty-eight octodecillion one hundred three septendecillion four hundred twenty-seven sexdecillion seventy-two quindecillion nine hundred twenty-eight quattuordecillion six hundred seventy-two tredecillion nine hundred twelve duodecillion six hundred fifty-six undecillion six hundred seventy-four decillion four hundred sixty-five nonillion eight hundred fourty-five octillion one hundred twenty-six septillion four hundred fifty-eight sextillion one hundred sixty-two quintillion six hundred seventeen quadrillion four hundred twenty-five trillion two hundred eighty-three billion seven hundred thirty-three million seven hundred twenty-nine thousand six hundred fourty-six and eighty-five septillion six hundred ninety-five sextillion thirty-one quintillion seven hundred thirty-nine quadrillion seven hundred thirty-four trillion six hundred ninety-five billion three hundred ninety-one million four hundred four thousand three hundred seventy-six hundred-septillionth

2
só precisa isso para Inglês sozinho
Jason

2
@ Jason, eu estava respondendo à pergunta "Existe uma função fácil de usar em qualquer biblioteca de matemática que eu possa usar para esse fim?"
Yanick Rochon

2
Inglês americano ou inglês britânico? Bilhões tem significados diferentes entre essas culturas.
Don Roby

6
@ Don Roby - AFAIK, isso é apenas uma preocupação histórica. A maioria das pessoas britânicas usa o significado do inglês americano nos dias de hoje. (É claro que existem alguns excêntricos por aí que escrevem cartas (em tinta verde) ao Times sobre esse tipo de coisa, mas provavelmente não notarão, por se recusarem a aprender a usar computadores :-))
Stephen C

1
@Rochon: Bom código !! Ajudou-me bastante .. mas tem um pequeno bug .. teste com "10.00" ... para remover esse bug, você deseja adicionar uma pequena correção ao converter string em palavra, int indexOfDecimal = value.indexOf ("."); String decimal = value.substring (indexOfDecimal + 1, value.length ()); BigDecimal decimalValue = novo BigDecimal (decimal); if (decimalValue.compareTo (BigDecimal.ZERO) == 0) value = value.substring (0, indexOfDecimal);
Abhishek Chatterjee

60

O ICU4J contém um bom suporte de ortografia de número. Os arquivos com as "regras" podem ser facilmente editados, e não há problema em adicionar outros idiomas (fizemos isso, por exemplo, para polonês e russo).


Os dados do ICU4J vêm do CLDR unicode.org/cldr e já suportam polonês e russo. unicode.org/repos/cldr/trunk/common/rbnf Você registrou um ticket se encontrou problemas com as regras existentes?
Steven R. Loomis

Não, mas fizemos isso alguns anos atrás, e se bem me lembro, precisávamos de algumas coisas adicionais. Mas é bom saber!
Landei 12/10/10

O RBNF passou por grandes reformas há um ano, tanto no CLDR quanto na UTI. Confira.
Steven R. Loomis

5
Esta deve ser a resposta selecionada uma vez que os outros dependem de bugs montado e exemplo unlocalized implementações
ooxi

7
Sim! Esta deve ser uma resposta selecionada ... Funcionou como um encanto ... Traduz para qualquer idioma, região ou país listados aqui iana.org/assignments/language-subtag-registry/… .. O uso é tão simples como. RuleBasedNumberFormat ruleBasedNumberFormat = new RuleBasedNumberFormat( new Locale("EN", "US"), RuleBasedNumberFormat.SPELLOUT ); System.out.println(ruleBasedNumberFormat.format(value));
Muthu Ganapathy Nathan

24

Eu acho que essa solução não é a melhor, pois funciona apenas para int, mas acho que é ótima para iniciantes.

public class NumberWordConverter {
    public static final String[] units = {
            "", "one", "two", "three", "four", "five", "six", "seven",
            "eight", "nine", "ten", "eleven", "twelve", "thirteen", "fourteen",
            "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"
    };

    public static final String[] tens = {
            "",        // 0
            "",        // 1
            "twenty",  // 2
            "thirty",  // 3
            "forty",   // 4
            "fifty",   // 5
            "sixty",   // 6
            "seventy", // 7
            "eighty",  // 8
            "ninety"   // 9
    };

    public static String convert(final int n) {
        if (n < 0) {
            return "minus " + convert(-n);
        }

        if (n < 20) {
            return units[n];
        }

        if (n < 100) {
            return tens[n / 10] + ((n % 10 != 0) ? " " : "") + units[n % 10];
        }

        if (n < 1000) {
            return units[n / 100] + " hundred" + ((n % 100 != 0) ? " " : "") + convert(n % 100);
        }

        if (n < 1000000) {
            return convert(n / 1000) + " thousand" + ((n % 1000 != 0) ? " " : "") + convert(n % 1000);
        }

        if (n < 1000000000) {
            return convert(n / 1000000) + " million" + ((n % 1000000 != 0) ? " " : "") + convert(n % 1000000);
        }

        return convert(n / 1000000000) + " billion"  + ((n % 1000000000 != 0) ? " " : "") + convert(n % 1000000000);
    }

    public static void main(final String[] args) {
        final Random generator = new Random();

        int n;
        for (int i = 0; i < 20; i++) {
            n = generator.nextInt(Integer.MAX_VALUE);

            System.out.printf("%10d = '%s'%n", n, convert(n));
        }

        n = 1000;
        System.out.printf("%10d = '%s'%n", n, convert(n));

        n = 2000;
        System.out.printf("%10d = '%s'%n", n, convert(n));

        n = 10000;
        System.out.printf("%10d = '%s'%n", n, convert(n));

        n = 11000;
        System.out.printf("%10d = '%s'%n", n, convert(n));

        n = 999999999;
        System.out.printf("%10d = '%s'%n", n, convert(n));

        n = Integer.MAX_VALUE;
        System.out.printf("%10d = '%s'%n", n, convert(n));
    }
}

O teste cria 20 números aleatórios até Integer.MAX_VALUEe alguns que sabem ser problemáticos, por causa de 0, 10, etc.

   5599908 = 'five million five hundred ninety nine thousand nine hundred eight'
 192603486 = 'one hundred ninety two million six hundred three thousand four hundred eighty six'
1392431868 = 'one billion three hundred ninety two million four hundred thirty one thousand eight hundred sixty eight'
1023787010 = 'one billion twenty three million seven hundred eighty seven thousand ten'
1364396236 = 'one billion three hundred sixty four million three hundred ninety six thousand two hundred thirty six'
1511255671 = 'one billion five hundred eleven million two hundred fifty five thousand six hundred seventy one'
 225955221 = 'two hundred twenty five million nine hundred fifty five thousand two hundred twenty one'
1890141052 = 'one billion eight hundred ninety million one hundred forty one thousand fifty two'
 261839422 = 'two hundred sixty one million eight hundred thirty nine thousand four hundred twenty two'
 728428650 = 'seven hundred twenty eight million four hundred twenty eight thousand six hundred fifty'
 860607319 = 'eight hundred sixty million six hundred seven thousand three hundred nineteen'
 719753587 = 'seven hundred nineteen million seven hundred fifty three thousand five hundred eighty seven'
2063829124 = 'two billion sixty three million eight hundred twenty nine thousand one hundred twenty four'
1081010996 = 'one billion eighty one million ten thousand nine hundred ninety six'
 999215799 = 'nine hundred ninety nine million two hundred fifteen thousand seven hundred ninety nine'
2105226236 = 'two billion one hundred five million two hundred twenty six thousand two hundred thirty six'
1431882940 = 'one billion four hundred thirty one million eight hundred eighty two thousand nine hundred forty'
1991707241 = 'one billion nine hundred ninety one million seven hundred seven thousand two hundred forty one'
1088301563 = 'one billion eighty eight million three hundred one thousand five hundred sixty three'
 964601609 = 'nine hundred sixty four million six hundred one thousand six hundred nine'
      1000 = 'one thousand'
      2000 = 'two thousand'
     10000 = 'ten thousand'
     11000 = 'eleven thousand'
 999999999 = 'nine hundred ninety nine million nine hundred ninety nine thousand nine hundred ninety nine'
2147483647 = 'two billion one hundred forty seven million four hundred eighty three thousand six hundred forty seven'

Espero que ajude :)


9
/**

This Program will display the given number in words from 0 to 999999999

@author Manoj Kumar Dunna

Mail Id : manojdunna@gmail.com

**/  


import java.util.Scanner;

class NumberToString
{

    public enum hundreds {OneHundred, TwoHundred, ThreeHundred, FourHundred, FiveHundred, SixHundred, SevenHundred, EightHundred, NineHundred}
    public enum tens {Twenty, Thirty, Forty, Fifty, Sixty, Seventy, Eighty, Ninety}
    public enum ones {One, Two, Three, Four, Five, Six, Seven, Eight, Nine}
    public enum denom {Thousand, Lakhs, Crores}
    public enum splNums { Ten, Eleven, Twelve, Thirteen, Fourteen, Fifteen, Sixteen, Seventeen, Eighteen, Nineteen}
    public static String text = "";

    public static void main(String[] args) 
    {
        System.out.println("Enter Number to convert into words");
        Scanner sc = new Scanner(System.in);
        long num = sc.nextInt();
        int rem = 0;
        int i = 0;
        while(num > 0)
        {
            if(i == 0){
                rem = (int) (num % 1000);
                printText(rem);
                num = num / 1000;
                i++;
            }
            else if(num > 0)
            {
                rem = (int) (num % 100);
                if(rem > 0)
                    text = denom.values()[i - 1]+ " " + text;
                printText(rem);
                num = num / 100;
                i++;
            }
        }
        if(i > 0)
            System.out.println(text);
        else
            System.out.println("Zero");
    }

    public static void printText(int num)
    {
        if(!(num > 9 && num < 19))
        {
            if(num % 10 > 0)
                getOnes(num % 10);

            num = num / 10;
            if(num % 10 > 0)
                getTens(num % 10);

            num = num / 10;
            if(num > 0)
                getHundreds(num);
        }
        else
        {
            getSplNums(num % 10);
        }
    }

    public static void getSplNums(int num)
    {
        text = splNums.values()[num]+ " " + text;
    }

    public static void getHundreds(int num)
    {
        text = hundreds.values()[num - 1]+ " " + text;
    }

    public static void getTens(int num)
    {
        text = tens.values()[num - 2]+ " " + text;
    }

    public static void getOnes(int num)
    {
        text = ones.values()[num - 1]+ " " + text;
    }
}

2
Lakh e Crore é usado em inglês indiano, mas não na Europa e nem na América. Veja Wikipedia .
CoperNick

6
package it.tommasoresti.facebook;

class NumbersToWords {

    private static final String ZERO = "zero";
    private static String[] oneToNine = {
            "one", "two", "three", "four", "five", "six", "seven", "height", "nine"
    };

    private static String[] tenToNinteen = {
            "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"
    };

    private static String[] dozens = {
            "ten", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"
    };

    public static String solution(int number) {
        if(number == 0)
            return ZERO;

        return generate(number).trim();
    }

    public static String generate(int number) {
        if(number >= 1000000000) {
            return generate(number / 1000000000) + " billion " + generate(number % 1000000000);
        }
        else if(number >= 1000000) {
            return generate(number / 1000000) + " million " + generate(number % 1000000);
        }
        else if(number >= 1000) {
            return generate(number / 1000) + " thousand " + generate(number % 1000);
        }
        else if(number >= 100) {
            return generate(number / 100) + " hundred " + generate(number % 100);
        }

        return generate1To99(number);
    }

    private static String generate1To99(int number) {
        if (number == 0)
            return "";

        if (number <= 9)
            return oneToNine[number - 1];
        else if (number <= 19)
            return tenToNinteen[number % 10];
        else {
            return dozens[number / 10 - 1] + " " + generate1To99(number % 10);
        }
    }
}

Teste

@Test
public void given_a_complex_number() throws Exception {
    assertThat(solution(1234567890),
        is("one billion two hundred thirty four million five hundred sixty seven thousand height hundred ninety"));
}

1
solução brilhante.
Mohamed Nageh 8/11/19

5

Dê uma olhada no Tradukisto . É uma biblioteca Java que escrevi que faz o trabalho.


2
Existe uma razão para que todas essas respostas tenham uma gramática ruim? "mil duzentos e trinta e quatro" deve ser "mil duzentos e trinta e quatro". É algum inglês bancário que eu não conheço?
weston

3
@weston No inglês americano, o "e" não é usado. Isso é apenas em inglês britânico.
4castle

1
@ 4castle heh, esposa americana, moro no Canadá e nunca notei!
weston

4

Neste post, acabei de atualizar o código de Yanick Rochon . Eu torná-lo viável com a versão inferior do java 1.6 e eu estava recebendo a saída para 1,00 = um centésimo . Então, eu tenho atualizar o código. Novo eu recebo a saída para 1,00 = um e zero centésimo .

Eu não sei o que devo fazer. Adicione uma nova resposta ou edite essa postagem. Como a resposta é altamente classificada, fiz um novo post com a atualização do código. Acabei de mudar essas duas coisas mencionadas acima.

/**
 * This class will convert numeric values into an english representation
 * 
 * For units, see : http://www.jimloy.com/math/billion.htm
 * 
 * @author yanick.rochon@gmail.com
 */
public class NumberToWords {

    static public class ScaleUnit {
        private int exponent;
        private String[] names;

        private ScaleUnit(int exponent, String... names) {
            this.exponent = exponent;
            this.names = names;
        }

        public int getExponent() {
            return exponent;
        }

        public String getName(int index) {
            return names[index];
        }
    }

    /**
     * See http://www.wordiq.com/definition/Names_of_large_numbers
     */
    static private ScaleUnit[] SCALE_UNITS = new ScaleUnit[] {
            new ScaleUnit(63, "vigintillion", "decilliard"),
            new ScaleUnit(60, "novemdecillion", "decillion"),
            new ScaleUnit(57, "octodecillion", "nonilliard"),
            new ScaleUnit(54, "septendecillion", "nonillion"),
            new ScaleUnit(51, "sexdecillion", "octilliard"),
            new ScaleUnit(48, "quindecillion", "octillion"),
            new ScaleUnit(45, "quattuordecillion", "septilliard"),
            new ScaleUnit(42, "tredecillion", "septillion"),
            new ScaleUnit(39, "duodecillion", "sextilliard"),
            new ScaleUnit(36, "undecillion", "sextillion"),
            new ScaleUnit(33, "decillion", "quintilliard"),
            new ScaleUnit(30, "nonillion", "quintillion"),
            new ScaleUnit(27, "octillion", "quadrilliard"),
            new ScaleUnit(24, "septillion", "quadrillion"),
            new ScaleUnit(21, "sextillion", "trilliard"),
            new ScaleUnit(18, "quintillion", "trillion"),
            new ScaleUnit(15, "quadrillion", "billiard"),
            new ScaleUnit(12, "trillion", "billion"),
            new ScaleUnit(9, "billion", "milliard"),
            new ScaleUnit(6, "million", "million"),
            new ScaleUnit(3, "thousand", "thousand"),
            new ScaleUnit(2, "hundred", "hundred"),
            // new ScaleUnit(1, "ten", "ten"),
            // new ScaleUnit(0, "one", "one"),
            new ScaleUnit(-1, "tenth", "tenth"), new ScaleUnit(-2, "hundredth", "hundredth"),
            new ScaleUnit(-3, "thousandth", "thousandth"),
            new ScaleUnit(-4, "ten-thousandth", "ten-thousandth"),
            new ScaleUnit(-5, "hundred-thousandth", "hundred-thousandth"),
            new ScaleUnit(-6, "millionth", "millionth"),
            new ScaleUnit(-7, "ten-millionth", "ten-millionth"),
            new ScaleUnit(-8, "hundred-millionth", "hundred-millionth"),
            new ScaleUnit(-9, "billionth", "milliardth"),
            new ScaleUnit(-10, "ten-billionth", "ten-milliardth"),
            new ScaleUnit(-11, "hundred-billionth", "hundred-milliardth"),
            new ScaleUnit(-12, "trillionth", "billionth"),
            new ScaleUnit(-13, "ten-trillionth", "ten-billionth"),
            new ScaleUnit(-14, "hundred-trillionth", "hundred-billionth"),
            new ScaleUnit(-15, "quadrillionth", "billiardth"),
            new ScaleUnit(-16, "ten-quadrillionth", "ten-billiardth"),
            new ScaleUnit(-17, "hundred-quadrillionth", "hundred-billiardth"),
            new ScaleUnit(-18, "quintillionth", "trillionth"),
            new ScaleUnit(-19, "ten-quintillionth", "ten-trillionth"),
            new ScaleUnit(-20, "hundred-quintillionth", "hundred-trillionth"),
            new ScaleUnit(-21, "sextillionth", "trilliardth"),
            new ScaleUnit(-22, "ten-sextillionth", "ten-trilliardth"),
            new ScaleUnit(-23, "hundred-sextillionth", "hundred-trilliardth"),
            new ScaleUnit(-24, "septillionth", "quadrillionth"),
            new ScaleUnit(-25, "ten-septillionth", "ten-quadrillionth"),
            new ScaleUnit(-26, "hundred-septillionth", "hundred-quadrillionth"), };

    static public enum Scale {
        SHORT, LONG;

        public String getName(int exponent) {
            for (ScaleUnit unit : SCALE_UNITS) {
                if (unit.getExponent() == exponent) {
                    return unit.getName(this.ordinal());
                }
            }
            return "";
        }
    }

    /**
     * Change this scale to support American and modern British value (short scale) or Traditional
     * British value (long scale)
     */
    static public Scale SCALE = Scale.SHORT;

    static abstract public class AbstractProcessor {

        static protected final String SEPARATOR = " ";
        static protected final int NO_VALUE = -1;

        protected List<Integer> getDigits(long value) {
            ArrayList<Integer> digits = new ArrayList<Integer>();
            if (value == 0) {
                digits.add(0);
            } else {
                while (value > 0) {
                    digits.add(0, (int) value % 10);
                    value /= 10;
                }
            }
            return digits;
        }

        public String getName(long value) {
            return getName(Long.toString(value));
        }

        public String getName(double value) {
            return getName(Double.toString(value));
        }

        abstract public String getName(String value);
    }

    static public class UnitProcessor extends AbstractProcessor {

        static private final String[] TOKENS = new String[] { "one", "two", "three", "four",
                "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve", "thirteen",
                "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();

            int offset = NO_VALUE;
            int number;
            if (value.length() > 3) {
                number = Integer.valueOf(value.substring(value.length() - 3), 10);
            } else {
                number = Integer.valueOf(value, 10);
            }
            number %= 100;
            if (number < 10) {
                offset = (number % 10) - 1;
                // number /= 10;
            } else if (number < 20) {
                offset = (number % 20) - 1;
                // number /= 100;
            }

            if (offset != NO_VALUE && offset < TOKENS.length) {
                buffer.append(TOKENS[offset]);
            }

            return buffer.toString();
        }

    }

    static public class TensProcessor extends AbstractProcessor {

        static private final String[] TOKENS = new String[] { "twenty", "thirty", "fourty",
                "fifty", "sixty", "seventy", "eighty", "ninety" };

        static private final String UNION_SEPARATOR = "-";

        private UnitProcessor unitProcessor = new UnitProcessor();

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();
            boolean tensFound = false;

            int number;
            if (value.length() > 3) {
                number = Integer.valueOf(value.substring(value.length() - 3), 10);
            } else {
                number = Integer.valueOf(value, 10);
            }
            number %= 100; // keep only two digits
            if (number >= 20) {
                buffer.append(TOKENS[(number / 10) - 2]);
                number %= 10;
                tensFound = true;
            } else {
                number %= 20;
            }

            if (number != 0) {
                if (tensFound) {
                    buffer.append(UNION_SEPARATOR);
                }
                buffer.append(unitProcessor.getName(number));
            }

            return buffer.toString();
        }
    }

    static public class HundredProcessor extends AbstractProcessor {

        private int EXPONENT = 2;

        private UnitProcessor unitProcessor = new UnitProcessor();
        private TensProcessor tensProcessor = new TensProcessor();

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();

            int number;
            if ("".equals(value)) {
                number = 0;
            } else if (value.length() > 4) {
                number = Integer.valueOf(value.substring(value.length() - 4), 10);
            } else {
                number = Integer.valueOf(value, 10);
            }
            number %= 1000; // keep at least three digits

            if (number >= 100) {
                buffer.append(unitProcessor.getName(number / 100));
                buffer.append(SEPARATOR);
                buffer.append(SCALE.getName(EXPONENT));
            }

            String tensName = tensProcessor.getName(number % 100);

            if (!"".equals(tensName) && (number >= 100)) {
                buffer.append(SEPARATOR);
            }
            buffer.append(tensName);

            return buffer.toString();
        }
    }

    static public class CompositeBigProcessor extends AbstractProcessor {

        private HundredProcessor hundredProcessor = new HundredProcessor();
        private AbstractProcessor lowProcessor;
        private int exponent;

        public CompositeBigProcessor(int exponent) {
            if (exponent <= 3) {
                lowProcessor = hundredProcessor;
            } else {
                lowProcessor = new CompositeBigProcessor(exponent - 3);
            }
            this.exponent = exponent;
        }

        public String getToken() {
            return SCALE.getName(getPartDivider());
        }

        protected AbstractProcessor getHighProcessor() {
            return hundredProcessor;
        }

        protected AbstractProcessor getLowProcessor() {
            return lowProcessor;
        }

        public int getPartDivider() {
            return exponent;
        }

        @Override
        public String getName(String value) {
            StringBuilder buffer = new StringBuilder();

            String high, low;
            if (value.length() < getPartDivider()) {
                high = "";
                low = value;
            } else {
                int index = value.length() - getPartDivider();
                high = value.substring(0, index);
                low = value.substring(index);
            }

            String highName = getHighProcessor().getName(high);
            String lowName = getLowProcessor().getName(low);

            if (!"".equals(highName)) {
                buffer.append(highName);
                buffer.append(SEPARATOR);
                buffer.append(getToken());

                if (!"".equals(lowName)) {
                    buffer.append(SEPARATOR);
                }
            }

            if (!"".equals(lowName)) {
                buffer.append(lowName);
            }

            return buffer.toString();
        }
    }

    static public class DefaultProcessor extends AbstractProcessor {

        static private String MINUS = "minus";
        static private String UNION_AND = "and";

        static private String ZERO_TOKEN = "zero";

        private AbstractProcessor processor = new CompositeBigProcessor(63);

        @Override
        public String getName(String value) {
            boolean negative = false;
            if (value.startsWith("-")) {
                negative = true;
                value = value.substring(1);
            }

            int decimals = value.indexOf(".");
            String decimalValue = null;
            if (0 <= decimals) {
                decimalValue = value.substring(decimals + 1);
                value = value.substring(0, decimals);
            }

            String name = processor.getName(value);

            if ("".equals(name)) {
                name = ZERO_TOKEN;
            } else if (negative) {
                name = MINUS.concat(SEPARATOR).concat(name);
            }

            if (!(null == decimalValue || "".equals(decimalValue))) {

                String zeroDecimalValue = "";
                for (int i = 0; i < decimalValue.length(); i++) {
                    zeroDecimalValue = zeroDecimalValue + "0";
                }
                if (decimalValue.equals(zeroDecimalValue)) {
                    name = name.concat(SEPARATOR).concat(UNION_AND).concat(SEPARATOR).concat(
                            "zero").concat(SEPARATOR).concat(
                            SCALE.getName(-decimalValue.length()));
                } else {
                    name = name.concat(SEPARATOR).concat(UNION_AND).concat(SEPARATOR).concat(
                            processor.getName(decimalValue)).concat(SEPARATOR).concat(
                            SCALE.getName(-decimalValue.length()));
                }

            }

            return name;
        }

    }

    static public AbstractProcessor processor;

    public static void main(String... args) {

        processor = new DefaultProcessor();

        long[] values = new long[] { 0, 4, 10, 12, 100, 108, 299, 1000, 1003, 2040, 45213, 100000,
                100005, 100010, 202020, 202022, 999999, 1000000, 1000001, 10000000, 10000007,
                99999999, Long.MAX_VALUE, Long.MIN_VALUE };

        String[] strValues = new String[] { "0", "1.30", "0001.00", "3.141592" };

        for (long val : values) {
            System.out.println(val + " = " + processor.getName(val));
        }

        for (String strVal : strValues) {
            System.out.println(strVal + " = " + processor.getName(strVal));
        }

        // generate a very big number...
        StringBuilder bigNumber = new StringBuilder();
        for (int d = 0; d < 66; d++) {
            bigNumber.append((char) ((Math.random() * 10) + '0'));
        }
        bigNumber.append(".");
        for (int d = 0; d < 26; d++) {
            bigNumber.append((char) ((Math.random() * 10) + '0'));
        }
        System.out.println(bigNumber.toString() + " = " + processor.getName(bigNumber.toString()));
    }
}

A saída é

0 = zero
4 = four
10 = ten
12 = twelve
100 = one hundred
108 = one hundred eight
299 = two hundred ninety-nine
1000 = one thousand
1003 = one thousand three
2040 = two thousand fourty
45213 = fourty-five thousand two hundred thirteen
100000 = one hundred thousand
100005 = one hundred thousand five
100010 = one hundred thousand ten
202020 = two hundred two thousand twenty
202022 = two hundred two thousand twenty-two
999999 = nine hundred ninety-nine thousand nine hundred ninety-nine
1000000 = one million
1000001 = one million one
10000000 = ten million
10000007 = ten million seven
99999999 = ninety-nine million nine hundred ninety-nine thousand nine hundred ninety-nine
9223372036854775807 = nine quintillion two hundred twenty-three quadrillion three hundred seventy-two trillion thirty-six billion eight hundred fifty-four million seven hundred seventy-five thousand eight hundred seven
-9223372036854775808 = minus nine quintillion two hundred twenty-three quadrillion three hundred seventy-two trillion thirty-six billion eight hundred fifty-four million seven hundred seventy-five thousand eight hundred eight
0.0 = zero and zero tenth
1.30 = one and thirty hundredth
0001.00 = one and zero hundredth
3.141592 = three and one hundred fourty-one thousand five hundred ninety-two millionth
354064188376576616844741830273568537829518115677552666352927559274.76892492652888527014418647 = three hundred fifty-four vigintillion sixty-four novemdecillion one hundred eighty-eight octodecillion three hundred seventy-six septendecillion five hundred seventy-six sexdecillion six hundred sixteen quindecillion eight hundred fourty-four quattuordecillion seven hundred fourty-one tredecillion eight hundred thirty duodecillion two hundred seventy-three undecillion five hundred sixty-eight decillion five hundred thirty-seven nonillion eight hundred twenty-nine octillion five hundred eighteen septillion one hundred fifteen sextillion six hundred seventy-seven quintillion five hundred fifty-two quadrillion six hundred sixty-six trillion three hundred fifty-two billion nine hundred twenty-seven million five hundred fifty-nine thousand two hundred seventy-four and seventy-six septillion eight hundred ninety-two sextillion four hundred ninety-two quintillion six hundred fifty-two quadrillion eight hundred eighty-eight trillion five hundred twenty-seven billion fourteen million four hundred eighteen thousand six hundred fourty-seven hundred-septillionth

3
/* this program will display number in words
for eg. if you enter 101,it will show "ONE HUNDRED AND ONE"*/

import java.util.*;

public class NumToWords {
  String string;
  String st1[] = { "", "one", "two", "three", "four", "five", "six", "seven",
                   "eight", "nine", };
  String st2[] = { "hundred", "thousand", "lakh", "crore" };
  String st3[] = { "ten", "eleven", "twelve", "thirteen", "fourteen",
                   "fifteen", "sixteen", "seventeen", "eighteen", "ninteen", };
  String st4[] = { "twenty", "thirty", "fourty", "fifty", "sixty", "seventy",
                   "eighty", "ninety" };

  public String convert(int number) {
    int n = 1;
    int word;
    string = "";
    while (number != 0) {
      switch (n) {
        case 1:
          word = number % 100;
          pass(word);
          if (number > 100 && number % 100 != 0) {
            show("and ");
            //System.out.print("ankit");
          }
          number /= 100;
          break;
        case 2:
          word = number % 10;
          if (word != 0) {
            show(" ");
            show(st2[0]);
            show(" ");
            pass(word);
          }
          number /= 10;
          break;
        case 3:
          word = number % 100;
          if (word != 0) {
            show(" ");
            show(st2[1]);
            show(" ");
            pass(word);
          }
          number /= 100;
          break;
        case 4:
          word = number % 100;
          if (word != 0) {
            show(" ");
            show(st2[2]);
            show(" ");
            pass(word);
          }
          number /= 100;
          break;
        case 5:
          word = number % 100;
          if (word != 0) {
            show(" ");
            show(st2[3]);
            show(" ");
            pass(word);
          }
          number /= 100;
          break;
        }
        n++;
      }
      return string;
    }

  public void pass(int number) {
    int word, q;
    if (number < 10) {
      show(st1[number]);
    }
    if (number > 9 && number < 20) {
      show(st3[number - 10]);
    }
    if (number > 19) {
      word = number % 10;
      if (word == 0) {
        q = number / 10;
        show(st4[q - 2]);
      } else {
        q = number / 10;
        show(st1[word]);
        show(" ");
        show(st4[q - 2]);
      }
    }
  }

  public void show(String s) {
    String st;
    st = string;
    string = s;
    string += st;
  }

  public static void main(String[] args) {
    NumToWords w = new NumToWords();
    Scanner input = new Scanner(System.in);
    System.out.print("Enter Number: ");
    int num = input.nextInt();
    String inwords = w.convert(num);
    System.out.println(inwords);
  }
}

Você precisa adicionar algumas descrições, juntamente com o código ... Bem-vindo ao Stackoverflow
Sandip Armal Patil 27/10/12

2

Você pode usar RuleBasedNumberFormat. por exemplo resultado lhe daráNinety

ULocale locale = new ULocale(Locale.US);  //us english
Double d = Double.parseDouble(90);
NumberFormat formatter = new RuleBasedNumberFormat(locale, RuleBasedNumberFormat.SPELLOUT);
String result = formatter.format(d);

Ele suporta uma ampla variedade de idiomas.


1
Para falantes de espanhol I sugerindo ler esta resposta também: stackoverflow.com/a/10019105/3954514
Sebastian Cardona Osorio

1

Eu acho que isso pode ajudá-lo ... o programa é muito simples e funciona bem

import java.util.*;

public class NumberToWord

{
    public void pw(int n, String ch)
    {
        String one[] = {

        " ", " one", " two", " three", " four", " five", " six", " seven",
                " eight", " Nine", " ten", " eleven", " twelve", " thirteen",
                " fourteen", "fifteen", " sixteen", " seventeen", " eighteen",
                " nineteen" };
        String ten[] = { " ", " ", " twenty", " thirty", " forty", " fifty",
                " sixty", "seventy", " eighty", " ninety" };
        if (n > 19) {
            System.out.print(ten[n / 10] + " " + one[n % 10]);
        } else {
            System.out.print(one[n]);
        }
        if (n > 0)
            System.out.print(ch);

    }
    public static void main(String[] args)

    {
        int n = 0;
        Scanner s = new Scanner(System.in);
        System.out.print("Enter an integer number: ");
        n = s.nextInt();
        if (n <= 0)
            System.out.print("Enter numbers greater than 0");
        else
        {
            NumberToWord a = new NumberToWord();
            System.out.print("After conversion number in words is :");
            a.pw((n / 1000000000), " Hundred");
            a.pw((n / 10000000) % 100, " crore");
            a.pw(((n / 100000) % 100), " lakh");
            a.pw(((n / 1000) % 100), " thousand");
            a.pw(((n / 100) % 10), " hundred");
            a.pw((n % 100), " ");
        }
    }
}

1
import java.util.*;

public class NumberToWord {
    public void numberToword(int n, String ch) {
        String one[] = {" ", " one", " two", " three", " four", " five", " six", " seven", " eight", " Nine", " ten", " eleven", " twelve", " thirteen", " fourteen", "fifteen", " sixteen", " seventeen", " eighteen", " nineteen"
        };
        String ten[] = {" ", " ", " twenty", " thirty", " forty", " fifty", " sixty", "seventy", " eighty", " ninety"};
        if (n > 19) {
            System.out.print(ten[n / 10] + " " + one[n % 10]);
        } else {
            System.out.print(one[n]);
        }
        if (n > 0) {
            System.out.print(ch);
        }
    }
    public static void main(String[] args) {
        int n = 0;
        Scanner s = new Scanner(System.in);
        System.out.print("Enter an integer number: ");
        n = s.nextInt();
        if (n <= 0) {
            System.out.print("Enter numbers greater than 0");
        } else {
            NumberToWord a = new NumberToWord();
            System.out.print("After conversion number in words is :");
            a.numberToword((n / 1000000000), " Hundred");
            a.numberToword((n / 10000000) % 100, " crore");
            a.numberToword(((n / 100000) % 100), " lakh");
            a.numberToword(((n / 1000) % 100), " thousand");
            a.numberToword(((n / 100) % 10), " hundred");
            a.numberToword((n % 100), " ");
        }
    }
}

1

isso pode ajudar

public String numberToWords(long number) {
    if (number == 0) {
        return "zero";
    }
    if (number < 0) {
        return "minus " + numberToWords(Math.abs(number));
    }
    String words = "";
    if ((number / 10000000) > 0) {
        words += numberToWords(number / 10000000) + " Crore ";
        number %= 10000000;
    }
    if ((number / 100000) > 0) {
        words += numberToWords(number / 100000) + " Lakh ";
        number %= 100000;
    }
    if ((number / 1000) > 0) {
        words += numberToWords(number / 1000) + " Thousand ";
        number %= 1000;
    }
    if ((number / 100) > 0) {
        words += numberToWords(number / 100) + " Hundred ";
        number %= 100;
    }
    if (number > 0) {
        if (!words.equals("")) {
            words += "and ";
        }
        if (number < 20) {
            words += number;
        } else {
            words += (number);
            if ((number % 10) > 0) {
                words += "-" + (number % 10);
            }
        }
    }
    return words;
}

1

Você provavelmente não precisa mais disso, mas recentemente escrevi uma classe java para fazer isso. Aparentemente, Yanick Rochon fez algo semelhante. Ele converterá números de até 999 mil milhões de novecentos (999 * 10 ^ 60). Poderia fazer mais se eu soubesse o que aconteceu depois de um bilhão de novos, mas estaria disposto a apostar que é desnecessário. Basta alimentar o número como uma string em centavos. A saída também é gramaticalmente correta.

Aqui está um link para o Bitbucket Repo


2
FYI, este link parece estar quebrado
Justin

1
class NumberToWord {
    private static Map<Integer, String> numbers = new HashMap<Integer, String>();
    private static Set<Integer> numberSet = new TreeSet<Integer>(new Comparator<Integer>() {
        public int compare(Integer o1, Integer o2) {
            return o2 - o1;
        }
    });

    static {
        init();
        numberSet.addAll(numbers.keySet());
    }

    public static void main(String[] args) {
        System.out.println(getNumberInWord(1898765));
    }

    /*
     * convert positive numbers in word format number > 0 only
     */
    static String getNumberInWord(int number) {
        StringBuilder word = new StringBuilder();
        for (Integer n : numberSet) {
            if (number > 0 && number >= n) {
                int div = number / n;
                String strNum = numbers.get(div);
                if (strNum == null) {
                    word.append(getNumberInWord(div));
                }
                // for less than 100, we don't need to say 1
                if (strNum != null && (div > 1 || n > 100))
                    word.append(strNum + " ");

                word.append(numbers.get(n) + " ");
                number = number % n;
            }
        }
        return word.toString();
    }

    static void init() {
        numbers.put(0, "Zero");
        numbers.put(1, "One");
        numbers.put(2, "Two");
        numbers.put(3, "Three");
        numbers.put(4, "Four");
        numbers.put(5, "Five");
        numbers.put(6, "Six");
        numbers.put(7, "Seven");
        numbers.put(8, "Eight");
        numbers.put(9, "Nine");
        numbers.put(10, "Ten");
        numbers.put(11, "Eleven");
        numbers.put(12, "Twelve");
        numbers.put(13, "Thirteen");
        numbers.put(14, "Fourteen");
        numbers.put(15, "Fifteen");
        numbers.put(16, "Sixteen");
        numbers.put(17, "Seventeen");
        numbers.put(18, "Eighteeen");
        numbers.put(19, "Nineteen");
        numbers.put(20, "Twenty");
        numbers.put(30, "Thirty");
        numbers.put(40, "Forty");
        numbers.put(50, "Fifty");
        numbers.put(60, "Sixty");
        numbers.put(70, "Seventy");
        numbers.put(80, "Eighty");
        numbers.put(90, "Ninty");
        numbers.put(100, "Hundred");
        numbers.put(1000, "Thousand");
        numbers.put(1000000, "Million");
        numbers.put(100000000, "Billion");
    }

}

1

Eu desenvolvi um componente Java para converter um determinado número em palavras. Tudo o que você precisa fazer é - basta copiar toda a classe do programa Java para converter números em palavras e colá-la em seu projeto.

Basta invocá-lo como abaixo

Words w = Words.getInstance(1234567);
System.out.println(w.getNumberInWords());

Meu programa suporta até 10 milhões. Se você quiser, você ainda pode estender isso. Logo abaixo do exemplo de saída

2345223 = Twenty Three Lakh Fourty Five Thousand Two Hundred Twenty Three
9999999 = Ninety Nine Lakh Ninety Nine Thousand Nine Hundred Ninety Nine
199 = One Hundred Ninety Nine
10 = Ten

obrigado

Santhosh


1

Você pode usar o ICU4J , basta adicionar a entrada do POM e o código está abaixo para qualquer número, país e idioma.

Entrada POM

     <dependency>
        <groupId>com.ibm.icu</groupId>
        <artifactId>icu4j</artifactId>
        <version>64.2</version>
    </dependency>

Código é

public class TranslateNumberToWord {

/**
 * Translate
 * 
 * @param ctryCd
 * @param lang
 * @param reqStr
 * @param fractionUnitName
 * @return
 */
public static String translate(String ctryCd, String lang, String reqStr, String fractionUnitName) {
    StringBuffer result = new StringBuffer();

    Locale locale = new Locale(lang, ctryCd);
    Currency crncy = Currency.getInstance(locale);

    String inputArr[] = StringUtils.split(new BigDecimal(reqStr).abs().toPlainString(), ".");
    RuleBasedNumberFormat rule = new RuleBasedNumberFormat(locale, RuleBasedNumberFormat.SPELLOUT);

    int i = 0;
    for (String input : inputArr) {
        CurrencyAmount crncyAmt = new CurrencyAmount(new BigDecimal(input), crncy);
        if (i++ == 0) {
            result.append(rule.format(crncyAmt)).append(" " + crncy.getDisplayName() + " and ");
        } else {
            result.append(rule.format(crncyAmt)).append(" " + fractionUnitName + " ");
        }
    }
    return result.toString();
}

public static void main(String[] args) {
    String ctryCd = "US";
    String lang = "en";
    String input = "95.17";

    String result = translate(ctryCd, lang, input, "Cents");
    System.out.println("Input: " + input + " result: " + result);
}}

Testado com um grande número e saída seria

Input: 95.17 result: ninety-five US Dollar and seventeen Cents
Input: 999999999999999999.99 result: nine hundred ninety-nine quadrillion nine hundred ninety-nine trillion nine hundred ninety-nine billion nine hundred ninety-nine million nine hundred ninety-nine thousand nine hundred ninety-nine US Dollar and ninety-nine Cents 

Eu desenvolvi uma API REST para atender o número de palavras em qualquer idioma. Livre para usar, experimente 49.206.25.208:18080/api/v1/generate/…
Anand

0
/* This program will print words for a number between 0 to 99999*/

    public class NumberInWords5Digits {

        static int testcase1 = 93284;

        public static void main(String args[]){
            NumberInWords5Digits testInstance = new NumberInWords5Digits();
            String result = testInstance.inWords(testcase1);
            System.out.println("Result : "+result);
        }

        //write your code here
        public String inWords(int num){
            int digit = 0;
            String word = "";
            int temp = num;
            while(temp>0)
            {
                if(temp%10 >= 0)
                    digit++;
                temp = temp/10;
            }

            if(num == 0)
                return "zero";

            System.out.println(num);
            if(digit == 1)
                word = inTens(num, digit);
            else if(digit == 2)
                word = inTens(num, digit);
            else if(digit == 3)
                word = inHundreds(num, digit);
            else if(digit == 4)
                word = inThousands(num, digit);
            else if(digit == 5)
                word = inThousands(num, digit);
            return word;
        }

        public String inTens(int num, int digit){
            int tens = 0;
            int units = 0;
            if(digit == 2)      
            {
                tens = num/10;
                units = num%10;
            }
            String unit = "";
            String ten = "";
            String word = "";

            if(num == 10)
            {word = "ten"; return word;}

            if(num == 11)
            {word = "eleven"; return word;}
            if(num == 12)
            {word = "twelve"; return word;}
            if(num == 13)
            {word = "thirteen"; return word;}
            if(num == 14)
            {word = "fourteen"; return word;}
            if(num == 15)
            {word = "fifteen"; return word;}
            if(num == 16)
            {word = "sixteen"; return word;}
            if(num == 17)
            {word = "seventeen"; return word;}
            if(num == 18)
            {word = "eighteen"; return word;}
            if(num == 19)
            {word = "nineteen"; return word;}

            if(units == 1 || num == 1)
                unit = "one";
            else if(units == 2 || num == 2)
                unit = "two";
            else if(units == 3 || num == 3)
                unit = "three";
            else if(units == 4 || num == 4)
                unit = "four";
            else if(units == 5 || num == 5)
                unit = "five";
            else if(units == 6 || num == 6)
                unit = "six";
            else if(units == 7 || num == 7)
                unit = "seven";
            else if(units == 8 || num == 8)
                unit = "eight";
            else if(units == 9 || num == 9)
                unit = "nine";

            if(tens == 2)
                ten = "twenty";
            else if(tens == 3)
                ten = "thirty";
            else if(tens == 4)
                ten = "forty";
            else if(tens == 5)
                ten = "fifty";
            else if(tens == 6)
                ten = "sixty";
            else if(tens == 7)
                ten = "seventy";
            else if(tens == 8)
                ten = "eighty";
            else if(tens == 9)
                ten = "ninety";

            if(digit == 1)
                word = unit;
            else if(digit == 2)
                word = ten + " " + unit;
            return word;
        }

        //inHundreds(525, 3)
        public String inHundreds(int num, int digit){

            int hundreds = num/100; // =5
            int tensAndUnits = num%100; // =25
            String hundred = "";
            String tenAndUnit = "";
            String word = "";

            tenAndUnit = inTens(tensAndUnits, 2);

            if(hundreds == 1)
                hundred = "one hundred";
            else if(hundreds == 2)
                hundred = "two hundred";
            else if(hundreds == 3)
                hundred = "three hundred";
            else if(hundreds == 4)
                hundred = "four hundred";
            else if(hundreds == 5)
                hundred = "five hundred";
            else if(hundreds == 6)
                hundred = "six hundred";
            else if(hundreds == 7)
                hundred = "seven hundred";
            else if(hundreds == 8)
                hundred = "eight hundred";
            else if(hundreds == 9)
                hundred = "nine hundred";

            word = hundred + " " + tenAndUnit;
            return word;
        }

        public String inThousands(int num, int digit){

            int thousands = 0;      
            int hundredsAndOthers = num%1000;
            String thousand = "";
            String hundredAndOther = "";
            String word = "";
            if(digit == 5)
            {
                thousands = num/1000;
                thousand = inTens(thousands, 2);            
            }
            else if(digit == 4)
            {
                thousands = num/1000;
                thousand = inTens(thousands, 1);
            }

            if(hundredsAndOthers/100 == 0) // in case of "023"
                hundredAndOther = inTens(hundredsAndOthers, 2);
            else
                hundredAndOther = inHundreds(hundredsAndOthers, 3);

            word = thousand + " thousand " + hundredAndOther;

            return word;
        }
    }

0
import java.lang.*;
import java.io.*;
public class rupee
{
public static void main(String[] args)throws  IOException
{

 int len=0,revnum=0,i,dup=0,j=0,k=0;
 int gvalue;
  String[] ones={"one","Two","Three","Four","Five","Six","Seven","Eight","Nine","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen",""};
    String[] twos={"Ten","Twenty","Thirty","Fourty","fifty","Sixty","Seventy","eighty","Ninety",""};
System.out.println("\n Enter value");
InputStreamReader b=new InputStreamReader(System.in);
BufferedReader br=new BufferedReader(b);
gvalue=Integer.parseInt(br.readLine());
if(gvalue==10)

System.out.println("Ten");

else if(gvalue==100)

System.out.println("Hundred");

else if(gvalue==1000)
System.out.println("Thousand");

dup=gvalue;
for(i=0;dup>0;i++)
{
revnum=revnum*10+dup%10;
len++;
dup=dup/10;
}
while(j<len)
{
if(gvalue<10)
{
System.out.println(ones[gvalue-1]);
}
else if(gvalue>10&&gvalue<=19)
{
System.out.println(ones[gvalue-2]);
break;
}
else if(gvalue>19&&gvalue<100)
{
k=gvalue/10;
gvalue=gvalue%10;
System.out.println(twos[k-1]);
}
else if(gvalue>100&&gvalue<1000)
{
k=gvalue/100;
gvalue=gvalue%100;
System.out.println(ones[k-1] +"Hundred");
}
else if(gvalue>=1000&&gvalue<9999)
{
k=gvalue/1000;
gvalue=gvalue%1000;
System.out.println(ones[k-1]+"Thousand");
    }
else if(gvalue>=11000&&gvalue<=19000)
{
    k=gvalue/1000;
    gvalue=gvalue%1000;
    System.out.println(twos[k-2]+"Thousand");
}       
else if(gvalue>=12000&&gvalue<100000)
{
k=gvalue/10000;
    gvalue=gvalue%10000;
System.out.println(ones[gvalue-1]);
}
else
{
System.out.println("");
    }
j++;
}
}
}

0

Esta é outra maneira ... (com alcance limitado)

public static String numToWord(Integer i) {

 final  String[] units = { "Zero", "One", "Two", "Three",
        "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven",
        "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen",
        "Seventeen", "Eighteen", "Nineteen" };
 final  String[] tens = { "", "", "Twenty", "Thirty", "Forty",
        "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };
    if (i < 20)
        return units[i];
    if (i < 100)
        return tens[i / 10] + ((i % 10 > 0) ? " " + numToWord(i % 10) : "");
    if (i < 1000)
        return units[i / 100] + " Hundred"
                + ((i % 100 > 0) ? " and " + numToWord(i % 100) : "");
    if (i < 1000000)
        return numToWord(i / 1000) + " Thousand "
                + ((i % 1000 > 0) ? " " + numToWord(i % 1000) : "");
    return numToWord(i / 1000000) + " Million "
            + ((i % 1000000 > 0) ? " " + numToWord(i % 1000000) : "");
}

0

Eu implementei assim

package com.stack.overflow.number.in.english;

import java.util.ResourceBundle;

public class ActualImplementation {

    public static ResourceBundle readPropertyFile = ResourceBundle
            .getBundle("NumberEnglishRepresentation");

    public static void main(String[] args) {
        System.out.println(ActualImplementation.main(-2));
    }

    public static String main(Integer number) {
        int power;
        // Calculate Number of digits

        Integer numberOfDigits = number > 0 ? (int) Math.log10((double) number) + 1
                : 1;
        String output = "";
        // If number is negative convert it to positive an append minus to
        // output
        if (Integer.signum(number) == -1) {
            output = "minus ";
            number = number < 0 ? number * -1 : number;
        }
        String stringVal = String.valueOf(number);

        if (number <= 20 || number == 30 || number == 40 || number == 50
                || number == 60 || number == 70 || number == 80 || number == 90
                || number == 100 || number == 1000)
            output += readPropertyFile.getString(stringVal);

        else {
            int i;
            for (i = 0; i < numberOfDigits; i++) {

                if (number != 0) {

                    numberOfDigits = number > 0 ? (int) Math
                            .log10((double) number) + 1 : 1;

                    power = (int) Math.pow(10, numberOfDigits - 1);
                    // If number is like 10,001 then print ten first and then
                    // remaining value
                    if (numberOfDigits >= 5 && numberOfDigits % 2 == 1) {
                        power = (int) Math.pow(10, numberOfDigits - 2);
                    }

                    if (readPropertyFile.containsKey(String.valueOf(number)))
                        output += readPropertyFile.getString(String
                                .valueOf(number));
                    else {
                        // As the digits at units and tens place are read
                        // differently
                        if (numberOfDigits > 2) {

                            output += readPropertyFile.getString(String
                                    .valueOf(number / power))
                                    + readPropertyFile.getString(String
                                            .valueOf(power));
                        } else {
                            output += readPropertyFile.getString(String
                                    .valueOf(number - number % power));

                        }
                    }
                    number = (int) (number % power);

                }
            }
        }

        return output;
    }
}

e o arquivo de recurso é:

0=zero
1=one
2=two
3=three
4=four
5=five
6=six
7=seven
8=eight
9=nine
10=ten 


11=eleven
12=twelve
13=thirteen
14=fourteen
15fifteen
16=sixteen
17=seventeen
18=eighteen
19=nineteen
20=twenty

30=thirty
40=fourty
50=fifty
60=sixty
70=seventy
80=eighty
90=ninety

100=hundred
1000=thousand
100000=Lakh

Este é implementado até 10 lakhs apenas


0
public class NumberConverter {

    private String[] singleDigit = {"", " one", " two", " three",
    " four", " five"," six", " seven", " eight", " nine"};

    private String[] tens = {" ten", " eleven", " twelve", " thirteen",
            " fourteen", " fifteen"," sixteen", " seventeen", " eighteen", " nineteen"};

    private String[] twoDigits = {"", "", " twenty", " thirty",
            " forty", " fifty"," sixty", " seventy", " eighty", " ninety"};

    public String convertToWords(String input) {
        long number = Long.parseLong(input);
        int size = input.length();
        if (size <= 3) {
            int num = (int) number;
            return handle3Digits(num);
        } else if (size > 3 && size <= 6) {
            int thousand = (int)(number/1000);
            int hundred = (int) (number % 1000);
            String thousands = handle3Digits(thousand);

            String hundreds = handle3Digits(hundred);
            String word = "";

            if (!thousands.isEmpty()) {
                word = thousands +" thousand";
            }
            word += hundreds;
            return word;
        } else if (size > 6 && size <= 9) {
            int million = (int) (number/ 1000000);
            number = number % 1000000;
            int thousand = (int)(number/1000);
            int hundred = (int) (number % 1000);

            String millions = handle3Digits(million);
            String thousands = handle3Digits(thousand);
            String hundreds = handle3Digits(hundred);

            String word = "";

            if (!millions.isEmpty()) {
                word = millions +" million";
            }
            if (!thousands.isEmpty()) {
                word += thousands +" thousand";
            }
            word += hundreds;
            return word;
        }

        return "Not implemented yet.";
    }


    private String handle3Digits(int number) {
        if (number <= 0)
            return "";

        String word = "";
        if (number/100 > 0) {
            int dividend = number/100;
            word = singleDigit[dividend] + " hundred";
            number = number % 100;
        }
        if (number/10 > 1) {
            int dividend = number/10;
            number = number % 10;
            word += twoDigits[dividend];
        } else if (number/10 == 1) {
            number = number % 10;
            word += tens[number];
            return word;
        } else {
            number = number % 10;
        }
        if (number > 0) {
            word += singleDigit[number];
        }

        return word;
    }
}

0

A mesma resposta aceita (Jigar Joshi), mas agora em espanhol. Sinta-se livre para alterar isso se você encontrar um erro. Mais fácil que o francês, mas baseado nisso ...

Espanhol:

import java.text.*;

class SpanishNumberToWords {
  private static final String[] tensNames = {
    "",
    "",
    "veinte",
    "treinta",
    "cuarenta",
    "cincuenta",
    "sesenta",
    "setenta",
    "ochenta",
    "noventa"
  };

  private static final String[] unitNames1 = {
    "",
    "un",
    "dos",
    "tres",
    "cuatro",
    "cinco",
    "seis",
    "siete",
    "ocho",
    "nueve",
    "diez",
    "once",
    "doce",
    "trece",
    "catorce",
    "quince",
    "dieciseis",
    "diecisiete",
    "dieciocho",
    "diecinueve",
    "veinte",
    "veintiun",
    "veintidos",
    "veintitres",
    "veinticuatro",
    "veinticinco",
    "veintiseis",
    "veintisiete",
    "veintiocho",
    "veintinueve",
  };

  private static final String[] unitNames2 = {
    "",
    "",
    "dosc",
    "tresc",
    "cuatroc",
    "quin",
    "seisc",
    "setec",
    "ochoc",
    "novec",
    "diez"
  };

  private SpanishNumberToWords() {}

  private static String convertZeroToHundred(int number) {

    int theTens = number / 10;
    int theUnit = number % 10;
    String result = "";

    // separator
    String theSeparator = "";
    if (theTens > 1) {
        theSeparator = " y ";
    }
    // particular cases
    switch (theUnit) {
    case 0:
        theSeparator = "";
      break;
    default:
    }

    // tens in letters
    switch (theTens) {
    case 0:
        result = unitNames1[theUnit];
      break;
    case 1: case 2:
        result =  unitNames1[theTens*10+theUnit];
        break;
    default :
        result = tensNames[theTens]
                              + theSeparator + unitNames1[theUnit];
    }
    return result;
  }

  private static String convertLessThanOneThousand(int number) {

    int theHundreds = number / 100;
    int leReste = number % 100;
    String sReste = convertZeroToHundred(leReste);

    String result;
    switch (theHundreds) {
    case 0:
        result = sReste;
      break;
    case 1 :
      if (leReste > 0) {
          result = "ciento " + sReste;
      }
      else {
          result = "cien";
      }
      break;
    default :
      if (leReste > 0) {
          result = unitNames2[theHundreds] + "ientos " + sReste;
      }
      else {
          result = unitNames2[theHundreds] + "ientos";
      }
    }
    return result;
  }

  public static String convert(long number) {
    // 0 à 999 999 999 999
    if (number == 0) { return "cero"; }

    String snumber = Long.toString(number);

    // pad des "0"
    String mask = "000000000000";
    DecimalFormat df = new DecimalFormat(mask);
    snumber = df.format(number);

    // XXXnnnnnnnnn
    int theMilliards = Integer.parseInt(snumber.substring(0,3));
    // nnnXXXnnnnnn
    int theMillions  = Integer.parseInt(snumber.substring(3,6));
    // nnnnnnXXXnnn
    int theCentMiles = Integer.parseInt(snumber.substring(6,9));
    // nnnnnnnnnXXX
    int lesMille = Integer.parseInt(snumber.substring(9,12));

    String tradMilliards;
    switch (theMilliards) {
    case 0:
      tradMilliards = "";
      break;
    case 1 :
      tradMilliards = convertLessThanOneThousand(theMilliards)
         + " mil millones ";
      break;
    default :
      tradMilliards = convertLessThanOneThousand(theMilliards)
         + " mil millones ";
    }
    String resultat =  tradMilliards;

    String tradMillions;
    switch (theMillions) {
    case 0:
      tradMillions = "";
      break;
    case 1 :
      tradMillions = convertLessThanOneThousand(theMillions)
         + " millon ";
      break;
    default :
      tradMillions = convertLessThanOneThousand(theMillions)
         + " millones ";
    }
    resultat =  resultat + tradMillions;

    String tradCentMille;
    switch (theCentMiles) {
    case 0:
      tradCentMille = "";
      break;
    case 1 :
      tradCentMille = "mil ";
      break;
    default :
      tradCentMille = convertLessThanOneThousand(theCentMiles)
         + " mil ";
    }
    resultat =  resultat + tradCentMille;

    String tradMille;
    tradMille = convertLessThanOneThousand(lesMille);
    resultat =  resultat + tradMille;

    return resultat;
  }

  public static void main(String[] args) {
    System.out.println("*** " + SpanishNumberToWords.convert(0));
    System.out.println("*** " + SpanishNumberToWords.convert(1));
    System.out.println("*** " + SpanishNumberToWords.convert(2));
    System.out.println("*** " + SpanishNumberToWords.convert(3));
    System.out.println("*** " + SpanishNumberToWords.convert(4));
    System.out.println("*** " + SpanishNumberToWords.convert(5));
    System.out.println("*** " + SpanishNumberToWords.convert(7));
    System.out.println("*** " + SpanishNumberToWords.convert(12));
    System.out.println("*** " + SpanishNumberToWords.convert(16));
    System.out.println("*** " + SpanishNumberToWords.convert(19));
    System.out.println("*** " + SpanishNumberToWords.convert(21));
    System.out.println("*** " + SpanishNumberToWords.convert(24));
    System.out.println("*** " + SpanishNumberToWords.convert(28));
    System.out.println("*** " + SpanishNumberToWords.convert(29));
    System.out.println("*** " + SpanishNumberToWords.convert(30));
    System.out.println("*** " + SpanishNumberToWords.convert(31));
    System.out.println("*** " + SpanishNumberToWords.convert(42));
    System.out.println("*** " + SpanishNumberToWords.convert(71));
    System.out.println("*** " + SpanishNumberToWords.convert(72));
    System.out.println("*** " + SpanishNumberToWords.convert(80));
    System.out.println("*** " + SpanishNumberToWords.convert(81));
    System.out.println("*** " + SpanishNumberToWords.convert(89));
    System.out.println("*** " + SpanishNumberToWords.convert(90));
    System.out.println("*** " + SpanishNumberToWords.convert(91));
    System.out.println("*** " + SpanishNumberToWords.convert(97));
    System.out.println("*** " + SpanishNumberToWords.convert(100));
    System.out.println("*** " + SpanishNumberToWords.convert(101));
    System.out.println("*** " + SpanishNumberToWords.convert(110));
    System.out.println("*** " + SpanishNumberToWords.convert(120));
    System.out.println("*** " + SpanishNumberToWords.convert(200));
    System.out.println("*** " + SpanishNumberToWords.convert(201));
    System.out.println("*** " + SpanishNumberToWords.convert(232));
    System.out.println("*** " + SpanishNumberToWords.convert(999));
    System.out.println("*** " + SpanishNumberToWords.convert(521));
    System.out.println("*** " + SpanishNumberToWords.convert(912));
    System.out.println("*** " + SpanishNumberToWords.convert(999));
    System.out.println("*** " + SpanishNumberToWords.convert(1000));
    System.out.println("*** " + SpanishNumberToWords.convert(1001));
    System.out.println("*** " + SpanishNumberToWords.convert(10000));
    System.out.println("*** " + SpanishNumberToWords.convert(10001));
    System.out.println("*** " + SpanishNumberToWords.convert(100000));
    System.out.println("*** " + SpanishNumberToWords.convert(267578));
    System.out.println("*** " + SpanishNumberToWords.convert(3000000000L));
    System.out.println("*** " + SpanishNumberToWords.convert(2147483647));
    /*
     *** OUTPUT
        *** cero
        *** un
        *** dos
        *** tres
        *** cuatro
        *** cinco
        *** siete
        *** doce
        *** dieciseis
        *** diecinueve
        *** veintiun
        *** veinticuatro
        *** veintiocho
        *** veintinueve
        *** treinta
        *** treinta y un
        *** cuarenta y dos
        *** setenta y un
        *** setenta y dos
        *** ochenta
        *** ochenta y un
        *** ochenta y nueve
        *** noventa
        *** noventa y un
        *** noventa y siete
        *** cien
        *** ciento un
        *** ciento diez
        *** ciento veinte
        *** doscientos
        *** doscientos un
        *** doscientos treinta y dos
        *** novecientos noventa y nueve
        *** quinientos veintiun
        *** novecientos doce
        *** novecientos noventa y nueve
        *** mil 
        *** mil un
        *** diez mil 
        *** diez mil un
        *** cien mil 
        *** doscientos sesenta y siete mil quinientos setenta y ocho
        *** tres mil millones 
        *** dos mil millones ciento cuarenta y siete millones cuatrocientos ochenta y tres mil seiscientos cuarenta y siete
     */
  }

1
Você também pode usar o ICUJ, coloquei um exemplo aqui gist.github.com/earth001/bf30be16489e1c2538ac3dd55d9ffc94
SHoko

0

Este programa pode converter números de até 102 dígitos. Sugestões e comentários são muito apreciados.

package com.kegeesoft;
/**
 * @author Chandana Gamage +94 710 980 120
 * @author maheshgamage375@gmail.com
 * @author KeGee Software Solutions
 */
import java.math.BigDecimal;
import java.math.BigInteger;

public class Converter {
    private final BigInteger zero = new BigInteger("0");        
    private final BigInteger scale[] = new BigInteger[33];                                        
    private final String scaleName[] = {" Duotrigintillion"," Untrigintillion"," Trigintillion",
                                        " Nonvigintillion"," Octovigintillion"," Septvigintillion",
                                        " Sexvigintillion"," Quinvigintillion"," Quattuorvigintillion",
                                        " Trevigintillion"," Duovigintillion"," Unvigintillion",
                                        " Vigintillion"," Novemdecillion"," Octodecillion",
                                        " Septemdecillion"," Sexdecillion"," Quindecillion",
                                        " Quattuordecillion "," Tredecillion"," Duodecillion",
                                        " Undecillion"," Decillion"," Nonillion"," Octillion",
                                        " Septillion"," Sextillion"," Quintillion"," Quadrillion",
                                        " Trillion"," Billion"," Million"," Thousand"};
    private final String ones[] = {""," One"," Two"," Three"," Four"," Five"," Six"," Seven"," Eight"," Nine",
                                   " Ten"," Eleven"," Twelve"," Thirteen"," Fourteen"," Fifteen"," Sixteen",
                                   " Seventeen"," Eighteen"," Nineteen"};    
    private final String tens[] = {"",""," Twenty"," Thirty"," Forty"," Fifty"," Sixty"," Seventy"," Eighty"," Ninety"};
    private int index = 0;    
    private String shortValueInWords = "";
    private String output = "";
    private String decimalInWords = "";
    private String valueInWords;

    public String setValue(BigInteger value) throws Exception{
        return this.bigValueInWords(value);
    }

    public String setValue(BigDecimal value) throws Exception{
        int indexOfDecimalPoint = (value.toString()).indexOf(".");

        // Split and pass interger value of given decimal value to constructor
        String tempIntValue = (value.toString()).substring(0, indexOfDecimalPoint);
        BigInteger intValue = new BigInteger(tempIntValue);

        // Split and pass decimal value of given decimal value to constructor
        String tempDeciValue = (value.toString()).substring(indexOfDecimalPoint+1, value.toString().length());
        BigInteger deciValue = new BigInteger(tempDeciValue);

        this.bigValueInWords(intValue);
        this.decimalValueInWords(deciValue);
        return null;
    }

    public String setValue(BigDecimal value, String currencyName, String centsName) throws Exception{
        int indexOfDecimalPoint = (value.toString()).indexOf(".");

        // Split and pass interger value of given decimal value to constructor
        String tempIntValue = (value.toString()).substring(0, indexOfDecimalPoint);
        BigInteger intValue = new BigInteger(tempIntValue);

        // Split and pass decimal value of given decimal value to constructor
        String tempDeciValue = (value.toString()).substring(indexOfDecimalPoint+1, value.toString().length());
        @SuppressWarnings("UnusedAssignment")
        BigInteger deciValue = null;

        // Concatenate "0" if decimal value has only single digit
        if(tempDeciValue.length() == 1){
            deciValue = new BigInteger(tempDeciValue.concat("0"));
        }else{
            deciValue = new BigInteger(tempDeciValue);
        }

        this.output = currencyName+" ";
        this.bigValueInWords(intValue);
        this.centsValueInWords(deciValue, centsName);

        return null;
    }

    private String bigValueInWords(BigInteger value) throws Exception{
        // Build scale array
        int exponent = 99;
        for (int i = 0; i < scale.length; i++) {
            scale[i] = new BigInteger("10").pow(exponent);
            exponent = exponent - 3;
        }

        /* Idntify whether given value is a minus value or not
            if == yes then pass value without minus sign
            and pass Minus word to output
        */
        if(value.compareTo(zero) == -1){
            value = new BigInteger(value.toString().substring(1,value.toString().length()));
            output += "Minus ";
        }

        // Get value in words of big numbers (duotrigintillions to thousands)
        for (int i=0; i < scale.length; i++) {
            if((value.divide(scale[i])).compareTo(zero)==1){
            this.index = (int)(value.divide(scale[i])).intValue();
            output += shortValueInWords(this.index) + scaleName[i];
            value = value.mod(scale[i]);
            }
        }

        // Get value in words of short numbers (hundreds, tens and ones)
        output += shortValueInWords((int)(value.intValue()));

        // Get rid of any space at the beginning of output and return value in words
        return this.valueInWords = output.replaceFirst("\\s", "");
    }

    private String shortValueInWords(int shortValue) throws Exception{
        // Get hundreds
        if(String.valueOf(shortValue).length()==3){
            shortValueInWords = ones[shortValue / 100]+" Hundred"+shortValueInWords(shortValue % 100);
        }

        // Get tens
        if(String.valueOf(shortValue).length()== 2 && shortValue >= 20){
            if((shortValue / 10)>=2 && (shortValue % 10)>=0){
                shortValueInWords = tens[shortValue / 10] + ones[shortValue % 10];
            }
        }

        // Get tens between 10 and 20
        if(String.valueOf(shortValue).length()== 2 && shortValue >= 10 && shortValue < 20){
            shortValueInWords = ones[shortValue];
        }

        // Get ones
        if(String.valueOf(shortValue).length()==1){
            shortValueInWords = ones[shortValue];
        }

        return this.shortValueInWords;
    }

    private String decimalValueInWords(BigInteger decimalValue) throws Exception{
        decimalInWords = " Point";
        // Get decimals in point form (0.563 = zero point five six three)
        for(int i=0; i < (decimalValue.toString().length()); i++){
            decimalInWords += ones[Integer.parseInt(String.valueOf(decimalValue.toString().charAt(i)))];
        }

        return this.decimalInWords;
    }

    private String centsValueInWords(BigInteger decimalValue, String centsName) throws Exception{
        decimalInWords = " and"+" "+centsName;

        // Get cents in words (5.52 = five and cents fifty two)
        if(decimalValue.intValue() == 0){
            decimalInWords += shortValueInWords(decimalValue.intValue())+" Zero only";
        }else{
            decimalInWords += shortValueInWords(decimalValue.intValue())+" only";
        }


        return this.decimalInWords;
    }

    public String getValueInWords(){
        return this.valueInWords + decimalInWords;
    }

    public static void main(String args[]){
        Converter c1 = new Converter();
        Converter c2 = new Converter();
        Converter c3 = new Converter();
        Converter c4 = new Converter();

        try{
            // Get integer value in words
            c1.setValue(new BigInteger("15634886"));
            System.out.println(c1.getValueInWords());

            // Get minus integer value in words
            c2.setValue(new BigInteger("-15634886"));
            System.out.println(c2.getValueInWords());

            // Get decimal value in words
            c3.setValue(new BigDecimal("358621.56895"));
            System.out.println(c3.getValueInWords());

            // Get currency value in words
            c4.setValue(new BigDecimal("358621.56"),"Dollar","Cents");
            System.out.println(c4.getValueInWords());
        }catch(Exception e){
            e.printStackTrace();
        }
    }
}

0

Aqui está uma classe NumberInWords.java muito simples que pode fazer o trabalho com muita facilidade:

String numberInWords = NumberInWords.convertNumberToWords(27546); //twenty seven thousand and five hundred forty six

É importante saber que essa classe é capaz de converter o tipo de dados int.


-1
    import java.util.Scanner;

public class StringToNum {
public static void main(String args[])
  {
    Scanner sc=new Scanner(System.in);
    System.out.println("Enter the no: ");
    int  no=sc.nextInt();
    int arrNum[]=new int[10];
    int i=0;
    while(no!=0)
    {
      arrNum[i]=no%10;
      no=no/10;
      i++;
    }
    int len=i;
    int arrNum1[]=new int[len];
    int j=0;
    for(int k=len-1;k>=0;k--)
    {
        arrNum1[j]=arrNum[k];
        j++;
    }
    StringToNum stn=new StringToNum();
    String output="";
    switch(len)
    {
      case 1:
      {
         output+=stn.strNum1(arrNum1[len-1]);
         System.out.println("output="+output);
         break;
      }
      case 2:
      {
        int no1=arrNum1[len-2]*10+arrNum1[len-1];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1);
        // output=output+" "+stn.strNum1(arrNum1[len-1]);
         System.out.println("output="+output);
        }
        else
        {
         arrNum1[len-2]=arrNum1[len-2]*10;
         output+=stn.strNum2(arrNum1[len-2]);
         output=output+" "+stn.strNum1(arrNum1[len-1]);
         System.out.println("output="+output);
        }
         break;
      }
      case 3:
      {
        output=stn.strNum1(arrNum1[len-3])+" hundred ";
        int no1=arrNum1[len-2]*10+arrNum1[len-1];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1);
        }
        else
        {
         arrNum1[len-2]=arrNum1[len-2]*10;
         output+=stn.strNum2(arrNum1[len-2]);
         output=output+" "+stn.strNum1(arrNum1[len-1]);
        }
        System.out.println("output="+output);  
        break;
      }
      case 4:
      {
        output=stn.strNum1(arrNum1[len-4])+" thousand ";
        if(!stn.strNum1(arrNum1[len - 3]).equals(""))
        {
        output+=stn.strNum1(arrNum1[len-3])+" hundred ";
        }
        int no1=arrNum1[len-2]*10+arrNum1[len-1];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1);
        }
        else
        {
         arrNum1[len-2]=arrNum1[len-2]*10;
         output+=stn.strNum2(arrNum1[len-2]);
         output=output+" "+stn.strNum1(arrNum1[len-1]);
        }
        System.out.println("output="+output);
        break;
      }

      case 5:
      {
        int no1=arrNum1[len-5]*10+arrNum1[len-4];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1)+" thousand ";
        }
        else
        {
         arrNum1[len-5]=arrNum1[len-5]*10;
         output+=stn.strNum2(arrNum1[len-5]);
         output=output+" "+stn.strNum1(arrNum1[len-4])+" thousand ";
        }
        if( !stn.strNum1(arrNum1[len - 3]).equals(""))
        {
        output+=stn.strNum1(arrNum1[len-3])+" hundred ";
        }
        no1 = arrNum1[len - 2] * 10 + arrNum1[len - 1];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1);
        }
        else
        {
         arrNum1[len-2]=arrNum1[len-2]*10;
         output+=stn.strNum2(arrNum1[len-2]);
         output=output+" "+stn.strNum1(arrNum1[len-1]);
        }
        System.out.println("output="+output);
        break;
      }
      case 6:
      {
        output+=stn.strNum1(arrNum1[len-6])+" million ";
        int no1=arrNum1[len-5]*10+arrNum1[len-4];
        if(no1>=11 & no1<=19)
        {
         output+=stn.strNum2(no1)+" thousand ";
        }
        else
        {
         arrNum1[len-5]=arrNum1[len-5]*10;
         output+=stn.strNum2(arrNum1[len-5]);
         output=output+" "+stn.strNum1(arrNum1[len-4])+" thousand ";
        }
        if( !stn.strNum1(arrNum1[len - 3]).equals(""))
        {
        output+=stn.strNum1(arrNum1[len-3])+" hundred ";
        }
        no1 = arrNum1[len - 2] * 10 + arrNum1[len - 1];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1);
        }
        else
        {
         arrNum1[len-2]=arrNum1[len-2]*10;
         output+=stn.strNum2(arrNum1[len-2]);
         output=output+" "+stn.strNum1(arrNum1[len-1]);
        }
        System.out.println("output="+output);
        break;
      }
      case 7:
      {
        int no1=arrNum1[len-7]*10+arrNum1[len-6];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1)+" Milloin ";
        }
        else
        {
         arrNum1[len-7]=arrNum1[len-7]*10;
         output+=stn.strNum2(arrNum1[len-7]);
         output=output+" "+stn.strNum1(arrNum1[len-6])+" Million ";
        }
        no1=arrNum1[len-5]*10+arrNum1[len-4];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1)+" Thousand ";
        }
        else
        {
         arrNum1[len-5]=arrNum1[len-5]*10;
         output+=stn.strNum2(arrNum1[len-5]);
         output=output+" "+stn.strNum1(arrNum1[len-4])+" Thousand ";
        }
        if( !stn.strNum1(arrNum1[len - 3]).equals(""))
        {
        output+=stn.strNum1(arrNum1[len-3])+" Hundred ";
        }
        no1 = arrNum1[len - 2] * 10 + arrNum1[len - 1];
        if(no1>=11 & no1<=19)
        {
         output=stn.strNum2(no1);
        }
        else
        {
         arrNum1[len-2]=arrNum1[len-2]*10;
         output+=stn.strNum2(arrNum1[len-2]);
         output=output+" "+stn.strNum1(arrNum1[len-1]);
        }
        System.out.println("output="+output);
        break;
      }
    }

  }
  String strNum1(int a)
  {
    String op="";
    switch(a)
    {
     case 1:
     {
     op="one";
     break;
     }
     case 2:
     {
     op="two";
     break;
     }
     case 3:
     {
     op="three";
     break;
     }
     case 4:
     {
     op="four";
     break;
     }
     case 5:
     {
     op="five";
     break;
     }
     case 6:
     {
     op="six";
     break;
     }
     case 7:
     {
     op="seven";
     break;
     }
     case 8:
     {
     op="eight";
     break;
     }
     case 9:
     {
     op="nine";
     break;
     }
    }
    return op;
  }
  String strNum2(int a)
  {
    String op="";
    switch(a)
    {
     case 10:
     {
     op="ten";
     break;
     }
     case 20:
     {
     op="twenty";
     break;
     }
     case 30:
     {
     op="thirty";
     break;
     }
     case 40:
     {
     op="fourty";
     break;
     }
     case 50:
     {
     op="fifty";
     break;
     }
     case 60:
     {
     op="sixty";
     break;
     }
     case 70:
     {
     op="seventy";
     break;
     }
     case 80:
     {
     op="eighty";
     break;
     }
     case 90:
     {
     op="ninty";
     break;
     }
     case 11:
     {
     op="eleven";
     break;
     }
     case 12:
     {
     op="twelve";
     break;
     }
     case 13:
     {
     op="thirteen";
     break;
     }
     case 14:
     {
     op="fourteen";
     break;
     }
     case 15:
     {
     op="fifteen";
     break;
     }
     case 16:
     {
     op="sixteen";
     break;
     }
     case 17:
     {
     op="seventeen";
     break;
     }
     case 18:
     {
     op="eighteen";
     break;
     }
     case 19:
     {
     op="nineteen";
     break;
     }
    }
    return op;
  }
}

-4

Eu usei matriz bidimensional ...

   import java.util.Scanner;


   public class numberEnglish {
   public static void main(String args[])
        {
    String[ ][ ] aryNumbers = new String[9][4];
    aryNumbers[0][0] = "one";
    aryNumbers[0][1] = "ten";
    aryNumbers[0][2] = "one hundred and";
    aryNumbers[0][3] = "one thousand";

    aryNumbers[1][0] = "two";
    aryNumbers[1][1] = "twenty";
    aryNumbers[1][2] = "two hundred and";
    aryNumbers[1][3] = "two thousand";

    aryNumbers[2][0] = "three";
    aryNumbers[2][1] = "thirty";
    aryNumbers[2][2] = "three hundred and";
    aryNumbers[2][3] = "three thousand";

    aryNumbers[3][0] = "four";
    aryNumbers[3][1] = "fourty";
    aryNumbers[3][2] = "four hundred and";
    aryNumbers[3][3] = "four thousand";

    aryNumbers[4][0] = "five";
    aryNumbers[4][1] = "fifty";
    aryNumbers[4][2] = "five hundred and";
    aryNumbers[4][3] = "five thousand";

    aryNumbers[5][0] = "six";
    aryNumbers[5][1] = "sixty";
    aryNumbers[5][2] = "six hundred and";
    aryNumbers[5][3] = "six thousand";

    aryNumbers[6][0] = "seven";
    aryNumbers[6][1] = "seventy";
    aryNumbers[6][2] = "seven hundred and";
    aryNumbers[6][3] = "seven thousand";

    aryNumbers[7][0] = "eight";
    aryNumbers[7][1] = "eighty";
    aryNumbers[7][2] = "eight hundred and";
    aryNumbers[7][3] = "eight thousand";

    aryNumbers[8][0] = "nine";
    aryNumbers[8][1] = "ninty";
    aryNumbers[8][2] = "nine hundred and";
    aryNumbers[8][3] = "nine thousand";


    //System.out.println(aryNumbers[0] + " "+aryNumbers[0] + " ");

    int number=0;
    Scanner sc = new Scanner(System.in);
    System.out.println(" Enter Number 4 digited number:: ");
    number = sc.nextInt();
    int temp = number;
    int count=1;
    String english="";
    String tenglish = "";
    if(number == 0)
    {
        System.out.println("*********");
        System.out.println("Zero");
        System.out.println("*********");
        sc.close();
        return;
    }
    while(temp !=0)
    {

        int r = temp%10;
        if(r==0)
        {
            tenglish = " zero ";
            count++;
        }
        else
        {

            int t1=r-1;
            int t2 = count-1;
            //System.out.println(t1 +" "+t2);
            count++;
            tenglish = aryNumbers[t1][t2];

            //System.out.println(aryNumbers[t1][t2]);
        }
        english = tenglish +" "+ english;
        temp = temp/10;

    }
    //System.out.println(aryNumbers[0][0]);
    english = english.replace("ten  zero", "ten");
    english = english.replace("twenty  zero", "twenty");
    english = english.replace("thirty  zero", "thirty");
    english = english.replace("fourty  zero", "fourty");
    english = english.replace("fifty  zero", "fifty");
    english = english.replace("sixty  zero", "sixty");
    english = english.replace("seventy  zero", "seventy");
    english = english.replace("eighty  zero", "eighty");
    english = english.replace("ninety  zero", "ninety");

    english = english.replace("ten one", "eleven");
    english = english.replace("ten two", "twelve");
    english = english.replace("ten three", "thirteen");
    english = english.replace("ten four", "fourteen");
    english = english.replace("ten five", "fifteen");
    english = english.replace("ten six", "sixteen");
    english = english.replace("ten seven", "seventeen");
    english = english.replace("ten eight", "eighteen");
    english = english.replace("ten nine", "nineteen");
    english = english.replace(" zero ", "");
    int length = english.length();
    String sub = english.substring(length-6,length-3);
    //System.out.println(length);
    //System.out.println(sub);
    if(sub.equals("and"))
    {
        //System.out.println("hello");
        english=english.substring(0,length-6);
    }
    System.out.println("********************************************");
    System.out.println(english);
    System.out.println("********************************************");
    sc.close();
}

}


Este código tem um erro. Você digitou 90 como "noventa" em um local e "noventa" em outro.
ninguém
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