Here you can find the source of toHex(final byte[] value)
| Parameter | Description |
|---|---|
| value | a parameter |
public static String toHex(final byte[] value)
//package com.java2s; /*/* w ww .jav a2 s .c o m*/ * DSS - Digital Signature Services * * Copyright (C) 2013 European Commission, Directorate-General Internal Market and Services (DG MARKT), B-1049 Bruxelles/Brussel * * Developed by: 2013 ARHS Developments S.A. (rue Nicolas Bov? 2B, L-1253 Luxembourg) http://www.arhs-developments.com * * This file is part of the "DSS - Digital Signature Services" project. * * "DSS - Digital Signature Services" is free software: you can redistribute it and/or modify it under the terms of * the GNU Lesser General Public License as published by the Free Software Foundation, either version 2.1 of the * License, or (at your option) any later version. * * DSS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License along with * "DSS - Digital Signature Services". If not, see <http://www.gnu.org/licenses/>. */ public class Main { /** * Used to build output as Hex */ private static final char[] DIGITS_LOWER = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' }; /** * Used to build output as Hex */ private static final char[] DIGITS_UPPER = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; /** * Converts an array of bytes into a String representing the hexadecimal values of each byte in order. The returned * String will be double the length of the passed array, as it takes two characters to represent any given byte. If * the input array is null then null is returned. The obtained string is converted to uppercase. * * @param value * @return */ public static String toHex(final byte[] value) { return (value != null) ? new String(encodeHex(value, false)) : null; } /** * Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order. * The returned array will be double the length of the passed array, as it takes two characters to represent any * given byte. * * @param data a byte[] to convert to Hex characters * @return A char[] containing hexadecimal characters */ public static char[] encodeHex(byte[] data) { return encodeHex(data, true); } /** * Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order. * The returned array will be double the length of the passed array, as it takes two characters to represent any * given byte. * * @param data a byte[] to convert to Hex characters * @param toLowerCase <code>true</code> converts to lowercase, <code>false</code> to uppercase * @return A char[] containing hexadecimal characters * @since 1.4 */ public static char[] encodeHex(byte[] data, boolean toLowerCase) { return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER); } /** * Converts an array of bytes into an array of characters representing the hexadecimal values of each byte in order. * The returned array will be double the length of the passed array, as it takes two characters to represent any * given byte. * * @param data a byte[] to convert to Hex characters * @param toDigits the output alphabet * @return A char[] containing hexadecimal characters * @since 1.4 */ protected static char[] encodeHex(byte[] data, char[] toDigits) { int l = data.length; char[] out = new char[l << 1]; // two characters form the hex value. for (int i = 0, j = 0; i < l; i++) { out[j++] = toDigits[(0xF0 & data[i]) >>> 4]; out[j++] = toDigits[0x0F & data[i]]; } return out; } }