Here you can find the source of bin2hex(final byte[] base)
public static String bin2hex(final byte[] base)
//package com.java2s; /**/*from www.jav a 2 s . com*/ * $URL$ * $Id$ * * Copyright (c) 2010 The Sakai Foundation * * Licensed under the Educational Community 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.opensource.org/licenses/ECL-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. */ public class Main { private static final char[] TOHEX = "0123456789abcdef".toCharArray(); public static String bin2hex(final byte[] base) { if (base != null) { char[] c = new char[base.length * 2]; int i = 0; for (byte b : base) { int j = b; // j = j + 128; // Wrong - not portable j = j & 0xff; // Right - portable c[i++] = TOHEX[j / 0x10]; c[i++] = TOHEX[j % 0x10]; } return new String(c); } else { return null; } } }