java double 2 decimal

1String result = String.format("%.2f", value);

1package com.mkyong;
2
3import java.math.RoundingMode;
4import java.text.DecimalFormat;
5
6public class DecimalExample {
7
8    private static DecimalFormat df2 = new DecimalFormat("#.##");
9
10    public static void main(String[] args) {
11
12        double input = 3.14159265359;
13        System.out.println("double : " + input);
14        System.out.println("double : " + df2.format(input));    //3.14
15
16        // DecimalFormat, default is RoundingMode.HALF_EVEN
17        df2.setRoundingMode(RoundingMode.DOWN);
18        System.out.println("\ndouble : " + df2.format(input));  //3.14
19
20        df2.setRoundingMode(RoundingMode.UP);
21        System.out.println("double : " + df2.format(input));    //3.15
22
23    }
24
25}
26Copy

1double res = Math.round(a * 100) / 100;