如何在Java中将数字转换为文字

Question

如何在Java中将数字转换为文字

155

我们目前有一个粗略的机制将数字转换为单词（例如，使用一些静态数组），并根据数字大小将其翻译成英文文本。但是我们遇到了大量数字的问题。

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

在任何数学库中，是否有一个易于使用的函数可供我用于此目的？

- Jason

1

这是一个可能对您有用的在线工具：https://helloacm.com/tools/convert-arabic-numerals-to-english-words/ - justyy

这可能会有用 https://dev59.com/kG865IYBdhLWcg3wQMID#62600424 - Bu Saeed

33个回答

74

ICU4J 包含了很好的数字读法支持。这些“规则”文件可以轻松编辑，添加其他语言也不是问题（例如我们已经为波兰语和俄语添加了支持）。

- Landei

1

ICU4J的数据来自CLDR http://unicode.org/cldr/，已经支持波兰语和俄语。http://unicode.org/repos/cldr/trunk/common/rbnf/如果您发现现有规则存在问题，您是否已提交工单？ - Steven R. Loomis

不，但我们几年前做过这件事，如果我没记错的话，我们需要一些额外的东西。但知道这点很好！ - Landei

RBNF在一年前进行了重大改进，包括CLDR和ICU。请查看。 - Steven R. Loomis

7

这应该是被选中的答案，因为其他答案依赖于存在错误和未本地化的示例实现。 - ooxi

10

是的！这应该是一个优选答案...... 它非常有效...... 它可以翻译成任何语言，任何地区，任何国家，如此列出的 http://www.iana.org/assignments/language-subtag-registry/language-subtag-registry.. 使用方法很简单，只需要：

RuleBasedNumberFormat ruleBasedNumberFormat = new RuleBasedNumberFormat( new Locale("EN", "US"), RuleBasedNumberFormat.SPELLOUT ); System.out.println(ruleBasedNumberFormat.format(value));

- Muthu Ganapathy Nathan

63

因为你不能有一个通用的算法适用于每个区域设置，所以不行。你必须为支持的每个区域设置自己的算法。

** 编辑 **

只是为了好玩，我试着去写了这个类。它无法显示 Long.MIN_VALUE，因为存在位限制...但我认为可以通过将 long 值类型更改为小数或者更大的数字的 double 来进行修改。它可以使用数字的字符串表示形式显示任何长达 66 位和 26 位小数的数字。您可以添加更多的 ScaleUnit 来获得更多的小数位数...

/**
 * 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()));

    }

}

以及随机大数生成器的样本输出

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

- Yanick Rochon

2

只需要这个英文的内容。 - Jason

2

@Jason，我正在回答这个问题：“在任何数学库中是否有一个易于使用的函数可以用于此目的？” - Yanick Rochon

2

美式英语还是英式英语？亿在这些文化中有不同的含义。 - Don Roby

7

据我所知，这只是一个历史性的问题。现在大多数英国人使用美式英语的意思。（当然，还有一些古怪的人会写信（用绿色墨水）给泰晤士报反映这种情况，但由于拒绝学习使用电脑，他们可能不会注意到这个变化。） - Stephen C

1

@Rochon：代码写得不错！对我帮助很大。但是有一个小bug，用“10.00”测试一下就会发现。为了解决这个问题，我想在将字符串转换为单词时添加一个小修复程序： int indexOfDecimal = value.indexOf("."); String decimal = value.substring(indexOfDecimal + 1, value.length()); BigDecimal decimalValue = new BigDecimal(decimal); if (decimalValue.compareTo(BigDecimal.ZERO) == 0) value = value.substring(0, indexOfDecimal); - Abhishek Chatterjee

显示剩余3条评论

30

我认为这个解决方案不是最好的，因为它只适用于int，但我认为对于初学者来说这非常棒。

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));
    }
}

测试会创建20个随机数，最大值为Integer.MAX_VALUE，然后添加一些已知的有问题的数字，例如0、10等。输出结果：

   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'

希望能帮到你 :)

- robosoul

这太好了，但对于印度号码怎么办？我们没有百万等单位... - Sambhav Khandelwal

16

package it.tommasoresti.facebook;

class NumbersToWords {

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

测试

@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 eight hundred ninety"));
}

- Tommaso Resti

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;
    }
}

- Manoj Kumar Dunna

2

拉克和千万是印度英语中使用的单位，但在欧洲和美国没有使用。请参阅Wikipedia。 - CoperNick

6

看一下Tradukisto。这是我编写的一个Java库，可以完成这项工作。

- Dorian Sarnowski

2

所有这些答案为什么语法都很糟糕？“一千二百三十四”应该是“一千、两百零三十四”。这是我不知道的银行英语吗？ - weston

5

在美式英语中，不使用单词"and"，而只有在英式英语中才使用。 - 4castle

1

@4castle 哈哈，我有个美国妻子，我住在加拿大，我从来没有注意到！ - weston

4

你可以使用ICU4J，只需要添加POM条目，以下是任何数字、国家和语言的代码。

POM条目：

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

代码是什么？

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);
}}

测试了相当大的数字，输出如下：

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

- Anand

4

在这篇文章中，我刚刚更新了Yanick Rochon的代码。我已经使它可以在较低版本的Java 1.6上工作，并且我得到了1.00 = one and hundredth的输出。因此，我更新了代码。现在我得到了1.00 = one and zero hundredth的输出。

我不知道该怎么办。是添加一个新答案还是编辑那篇文章。由于答案排名很高，所以我用更新的代码发布了一个新帖子。我只更改了上面提到的这两个事情。

/**
 * 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()));
    }
}

输出结果为：

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

- Sudeepta

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);
  }
}

- Ankit Arjaria

你需要在代码中添加一些描述...欢迎来到Stackoverflow。 - Sandip Armal Patil

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- jmj · Accepted Answer

这里是代码，我认为没有SE中的任何方法。

它基本上将数字转换为字符串并解析字符串，并将其与权重相关联。

例如：

1被视为千位数，因此1会因位置而被映射为"one"和"thousand"。

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
     **/
  }
}

中文与英语版本相比，法语有很大的不同，但法语要难得多！

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
     */
  }
}

通过调用“convert”方法两次，您可以处理“美元和分”的转换。

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" ;

如果可用，您可以使用DBMS的内置函数的另一种方式。对于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