Java tutorial
//package com.java2s; public class Main { public static String convertTwoHexString(int num) { // return "0x" + Integer.toHexString(num).toUpperCase(); String temp = Integer.toHexString(num).toUpperCase(); switch (temp.length()) { case 1: return "0x000" + temp; case 2: return "0x00" + temp; case 3: return "0x0" + temp; default: return "0x" + temp; } } }