Here you can find the source of bytes2Hex(byte[] b)
public static String bytes2Hex(byte[] b)
//package com.java2s; /*/*from w w w. ja v a2 s .c om*/ * ByteUtil.java - utilities for byte array handling. * * Copyright (c) 2009-2015 PIAX develoment team * Copyright (c) 2006-2008 Osaka University * Copyright (c) 2004-2005 BBR Inc, Osaka University * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * $Id: ByteUtil.java 1176 2015-05-23 05:56:40Z teranisi $ */ public class Main { public static String bytes2Hex(byte[] b) { StringBuilder str = new StringBuilder(); for (int i = 0; i < b.length; i++) { int _b = ((int) b[i]) & 0xff; char upper = Character.forDigit(_b / 16, 16); char lower = Character.forDigit(_b % 16, 16); str.append(upper); str.append(lower); } return str.toString(); } }