Here you can find the source of bytesToHexString(byte[] bArray)
public static String bytesToHexString(byte[] bArray)
//package com.java2s; public class Main { public static String bytesToHexString(byte[] bArray) { StringBuffer sb = new StringBuffer(bArray.length); for (int i = 0; i < bArray.length; i++) { String sTemp = Integer.toHexString(0xFF & bArray[i]); if (sTemp.length() < 2) { sb.append(0);//from w w w.ja va 2 s . c o m } sb.append(sTemp.toUpperCase()); } return sb.toString(); } }