Java Fraction Format format(Double num)

Description

format

License

Open Source License

Declaration

public static String format(Double num) 

Method Source Code

//package com.java2s;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.NumberFormat;

public class Main {
    public static String format(Double num) {
        java.text.DecimalFormat df = new java.text.DecimalFormat("0.00");
        return df.format(num);
    }//from   ww w . j a v a2  s.c om

    public static String format(BigDecimal num) {
        java.text.DecimalFormat df = new java.text.DecimalFormat("0.00");
        return df.format(num);
    }

    public static String format(BigDecimal num, int divisor) {
        return format(num.divide(new BigDecimal(divisor)));
    }

    public static String format(String num, int scale, boolean isFix) {

        NumberFormat nf = new DecimalFormat(parse(num, scale, isFix).toString());

        return nf.format(new BigDecimal(num));
    }

    public static BigDecimal parse(String num, int scale, boolean isFix) {
        StringBuffer flag = new StringBuffer();
        flag.append("#");

        for (int i = 0; i < scale; i++) {
            if (i == 0) {
                flag.append(isFix ? ".0" : ".#");
            } else {
                flag.append(isFix ? "0" : "#");
            }
        }

        return new BigDecimal(num);
    }
}

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