Here you can find the source of byteArrayToHexString(byte[] data)
public static final String byteArrayToHexString(byte[] data)
//package com.java2s; /*/*from w w w . j ava 2s . c om*/ * @(#)StringUtil.java Project:com.sinaapp.msdxblog.androidkit * Date:2012-12-18 * * Copyright (c) 2011 CFuture09, Institute of Software, * Guangdong Ocean University, Zhanjiang, GuangDong, China. * All rights reserved. * * 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 java.util.Locale; public class Main { public static final String byteArrayToHexString(byte[] data) { StringBuilder sb = new StringBuilder(data.length * 2); for (byte b : data) { int v = b & 0xff; if (v < 16) { sb.append('0'); } sb.append(Integer.toHexString(v)); } return sb.toString().toUpperCase(Locale.getDefault()); } }