public class Format {
public static void main(String[] args) {
DecimalFormat format = new DecimalFormat();
format.applyPattern("###,###,###.00");
System.out.println(format.format(123456789.86));//123,456,789.86
format.applyPattern("000,000.00");
System.out.println(format.format(79.86));//000,079.86
}
}