Java tutorial
//package com.java2s; public class Main { protected static String display(byte[] array) { char[] val = new char[2 * array.length]; String hex = "0123456789abcdef"; for (int i = 0; i < array.length; i++) { int b = array[i] & 0xff; val[2 * i] = hex.charAt(b >>> 4); val[2 * i + 1] = hex.charAt(b & 15); } return String.valueOf(val); } }