Java Decimal Round round(double d, int n)

Description

round

License

Apache License

Declaration

public static String round(double d, int n) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.math.BigDecimal;

import java.text.DecimalFormat;

public class Main {
    public static String round(double d, int n) {
        if (d == 0) {
            d = 0;//  ww w .ja va 2 s. co m
        }
        if (n < 0) {
            n = 0;
        }
        String str = "";
        if (n == 0) {
            str = "0";
        } else {
            str = "0.";
        }
        for (int i = 0; i < n; i++) {
            str = str + "0";
        }
        DecimalFormat formater = new DecimalFormat(str);
        BigDecimal b = new BigDecimal(d + "");
        double tempd = b.setScale(n, BigDecimal.ROUND_HALF_UP)
                .doubleValue();

        if (tempd == 0) {
            tempd = 0;
        }
        return formater.format(tempd);
    }
}

Related

1. getRoundedValue(double doubleValue)
2. getRoundedValue(double value)
3. round(double d, int p)
4. round(double dValue)
5. round(double number)
6. round(double unrounded, int precision)