Java tutorial
//package com.java2s; public class Main { public static String[] bytesToHexStrings(byte[] src) { if (src == null || src.length <= 0) { return null; } String[] str = new String[src.length]; for (int i = 0; i < src.length; i++) { int v = src[i] & 0xff; String hv = Integer.toHexString(v); if (hv.length() < 2) { str[i] = "0"; } str[i] = hv; } return str; } }