Here you can find the source of concatAll(byte[]... args)
public static byte[] concatAll(byte[]... args)
//package com.java2s; /*/*from w ww .ja v a 2s . c o m*/ * Copyright 2015 the original author or authors. * * Licensed under the Apache 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.apache.org/licenses/LICENSE-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. */ import java.util.Arrays; public class Main { public static byte[] concatAll(byte[]... args) { byte[] cur = concat(args[0], args[1]); for (int i = 2; i < args.length; i++) { cur = concat(cur, args[i]); } return cur; } public static byte[] concat(byte[] arg1, byte[] arg2) { byte[] result = Arrays.copyOf(arg1, arg1.length + arg2.length); System.arraycopy(arg2, 0, result, arg1.length, arg2.length); return result; } }