Here you can find the source of bytesToHexStr(byte[] array)
public static String bytesToHexStr(byte[] array)
//package com.java2s; /**//from www . j a v a 2s .c om * Copyright (C) 2013 EURECOM (www.eurecom.fr) * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import javax.xml.bind.DatatypeConverter; public class Main { public static String bytesToHexStr(byte[] array) { if (array == null) return null; else return DatatypeConverter.printHexBinary(array); } }