Java tutorial
import java.math.BigInteger; public class Main { public static void main(String[] args) { BigInteger number = new BigInteger("2008"); System.out.println("Number = " + number); System.out.println("Binary = " + number.toString(2)); System.out.println("Octal = " + number.toString(8)); System.out.println("Hexadecimal = " + number.toString(16)); number = new BigInteger("FF", 16); System.out.println("Number = " + number); System.out.println("Number = " + number.toString(16)); } }