Java Internationalization - DecimalFormat Class

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The java.text.DecimalFormat class is used for formatting numbers as per customized format and as per locale.

Example - Format Numbers

In this example, we're formatting numbers based on a given pattern.

 import java.text.DecimalFormat; public class I18NTester { public static void main(String[] args) { String pattern = "####,####.##"; double number = 123456789.123; DecimalFormat numberFormat = new DecimalFormat(pattern); System.out.println(number); System.out.println(numberFormat.format(number)); } } 

Output

It will print the following result.

 1.23456789123E8 1,2345,6789.12