Here you can find the source of bytesToHexString(byte[] byteArray)
public static String bytesToHexString(byte[] byteArray)
//package com.java2s; //License from project: Open Source License public class Main { public static String bytesToHexString(byte[] byteArray) { StringBuilder sb = new StringBuilder(); for (byte b : byteArray) { sb.append(String.format("%02X ", b)); }//from ww w . ja v a 2 s . com return sb.toString(); } }