Here you can find the source of toHexDigits(byte[] bytes)
private static String toHexDigits(byte[] bytes)
//package com.java2s; /*/*from w w w .ja v a2s .c o m*/ * * $Id: PSEUtils.java,v 1.1 2007/01/16 11:01:49 thomas Exp $ * * Copyright (c) 2001 Sun Microsystems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Sun Microsystems, Inc. for Project JXTA." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" * must not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact Project JXTA at http://www.jxta.org. * * 5. Products derived from this software may not be called "JXTA", * nor may "JXTA" appear in their name, without prior written * permission of Sun. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL SUN MICROSYSTEMS OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of Project JXTA. For more * information on Project JXTA, please see * <http://www.jxta.org/>. * * This license is based on the BSD license adopted by the Apache Foundation. */ public class Main { /** * Private replacement for toHexString since we need the leading 0 digits. * Returns a String containing byte value encoded as 2 hex characters. * * @param theByte a byte containing the value to be encoded. * @return String containing byte value encoded as 2 hex characters. **/ private static String toHexDigits(byte theByte) { final char[] HEXDIGITS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; StringBuffer result = new StringBuffer(2); result.append(HEXDIGITS[(theByte >>> 4) & 15]); result.append(HEXDIGITS[theByte & 15]); return result.toString(); } private static String toHexDigits(byte[] bytes) { StringBuffer encoded = new StringBuffer(bytes.length * 2); // build the string. for (int eachByte = 0; eachByte < bytes.length; eachByte++) { encoded.append(toHexDigits(bytes[eachByte]).toUpperCase()); } return encoded.toString(); } }