Here you can find the source of byteArray2HexString(byte[] data)
public static String byteArray2HexString(byte[] data)
//package com.java2s; //License from project: Open Source License public class Main { public static final int BYTE_MASK = 0xff; public static String byteArray2HexString(byte[] data) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < data.length; i++) { String temp = Integer.toHexString(data[i] & BYTE_MASK); if (temp.length() == 1) temp = "0" + temp; sb.append(temp);/*from w w w . ja va2 s.c o m*/ } return sb.toString().toUpperCase(); } }