Java Long Number to Date convert(long number)

Description

convert

License

Open Source License

Declaration

public static String convert(long number) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.text.DecimalFormat;

public class Main {
    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" };

    public static String convert(long number) {
        // 0 to 999 999 999 999
        if (number == 0) {
            return "zero";
        }//from ww w .  j  a v a  2 s . co  m

        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", " ");
    }

    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;
    }
}

Related

1. convert(long time)
2. convert(long value, double[] factors, String[] unites)
3. convert(Long[] targets)
4. convert2long(String date, String format)