Java tutorial
//package com.java2s; public class Main { public static String byteArrayToHexString(byte[] value) { StringBuilder stringBuilder = new StringBuilder(""); for (int i = 0; i < value.length; i++) { int v = value[i] & 0xFF; String hv = Integer.toHexString(v); if (hv.length() < 2) { stringBuilder.append(0); } stringBuilder.append(hv); } return stringBuilder.toString(); } }