Java tutorial
import java.text.*; import java.util.*; /** JDK1.1 introduced a series of Formatting classes that * format various items in locale-appropriate ways * (10000 becomes 10,000 or 10.000 or whatever, as needed * in various locales. * * This program shows some simple ways of using it; for more, * see JavaDoc on java.util.Locale and java.text.NumberFormat. */ public class NumFormat { public static void main(String[] av) { int data[] = { 100, 1000, 10000, 1000000 }; NumberFormat nf = NumberFormat.getInstance(Locale.US); for (int i = 0; i < data.length; ++i) { System.out.println(data[i] + "\t" + nf.format(data[i])); } } }