Internationalization and Formatter : Formatter « Utility Classes « SCJP

1. SCJP
2. Utility Classes
3. Formatter

import java.util.Formatter;
import java.util.Locale;

public class MainClass{
    public static void main(String[] argv){
        StringBuilder sb = new StringBuilder();
        Formatter f = new Formatter(sb, Locale.FRANCE);
        int a = 1234;
        int b = 5;
        f.format("PI is %25.18f!", Math.PI);
        System.out.println(sb);

    }
}

PI is      3,141592653589793000!