001/** 002 * 003 * Copyright © 2014-2019 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smack.util; 018 019public class ByteUtils { 020 021 /** 022 * Concatenate two byte arrays. 023 * 024 * @param arrayOne the first input array. 025 * @param arrayTwo the second input array 026 * @return the concatenation of the first and second input array. 027 * 028 */ 029 public static byte[] concat(byte[] arrayOne, byte[] arrayTwo) { 030 int combinedLength = arrayOne.length + arrayTwo.length; 031 byte[] res = new byte[combinedLength]; 032 System.arraycopy(arrayOne, 0, res, 0, arrayOne.length); 033 System.arraycopy(arrayTwo, 0, res, arrayOne.length, arrayTwo.length); 034 return res; 035 } 036 037}