Here you can find the source of bytesToHex(byte[] b)
public static String bytesToHex(byte[] b)
//package com.java2s; //License from project: Open Source License public class Main { public static String bytesToHex(byte[] b) { return javax.xml.bind.DatatypeConverter.printHexBinary(b); }/* w ww .j a va2 s. c om*/ }