Java Data Type How to - Format Floating Point Numbers and keep only three digits after decimal

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Question

We would like to know how to format Floating Point Numbers and keep only three digits after decimal.

Answer

import java.text.DecimalFormat;
/*from   w  ww  . ja  va  2  s .c o  m*/
public class Main {
    public static void main(String[] args) {
        DecimalFormat df = new DecimalFormat("0.###");
        double[] tests = {2.50, 2.0, 1.3751212, 2.1200};
        for(double d : tests) {
            System.out.println(df.format(d));
        }
    }
}

The code above generates the following result.

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