Here you can find the source of bytesToHex(final byte[] bytes, final boolean toLowerCase)
| Parameter | Description |
|---|---|
| bytes | The input bytes to convert to Hex characters |
| toLowerCase | true converts to lowercase or false to uppercase |
public static String bytesToHex(final byte[] bytes, final boolean toLowerCase)
//package com.java2s; /*/* w ww. j a v a 2 s. c o m*/ * ==================== * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2008-2009 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of the Common Development * and Distribution License("CDDL") (the "License"). You may not use this file * except in compliance with the License. * * You can obtain a copy of the License at * http://opensource.org/licenses/cddl1.php * See the License for the specific language governing permissions and limitations * under the License. * * When distributing the Covered Code, include this CDDL Header Notice in each file * and include the License file at http://opensource.org/licenses/cddl1.php. * If applicable, add the following below this CDDL Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyrighted [year] [name of copyright owner]" * ==================== * Portions Copyrighted 2015 ForgeRock AS. */ public class Main { final protected static char[] LOWER_HEX_ARRAY = "0123456789abcdef".toCharArray(); final protected static char[] UPPER_HEX_ARRAY = "0123456789ABCDEF".toCharArray(); /** * Computes the Hex encoded input. * * @param bytes * The input bytes to convert to Hex characters * @param toLowerCase * {@code true} converts to lowercase or {@code false} to * uppercase * @return A String containing hexadecimal characters * @since 1.5 */ public static String bytesToHex(final byte[] bytes, final boolean toLowerCase) { char[] hexChars = new char[bytes.length * 2]; char[] hexArray = toLowerCase ? LOWER_HEX_ARRAY : UPPER_HEX_ARRAY; for (int j = 0; j < bytes.length; j++) { int v = bytes[j] & 0xFF; hexChars[j * 2] = hexArray[v >>> 4]; hexChars[j * 2 + 1] = hexArray[v & 0x0F]; } return new String(hexChars); } }