java.lang.Integer.toHexString() java.lang.Integer.toBinaryString() java.lang.Integer.toOctalString() java.lang.Integer.toHexString() package com.codingdict; import java.lang.*; public class IntegerDemo { public static void main(String[] args) { int i = 170; System.out.println("Number = " + i); /* returns the string representation of the unsigned integer value represented by the argument in hexadecimal (base 16) */ System.out.println("Hex = " + Integer.toHexString(i)); } } java.lang.Integer.toBinaryString() java.lang.Integer.toOctalString()