Here you can find the source of merge(byte[] a, byte[] b)
public static byte[] merge(byte[] a, byte[] b)
//package com.java2s; /*//w w w. j av a2 s . c om * #%L * Hot * %% * Copyright (C) 2010 - 2016 Solidx * %% * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program. If not, see * <http://www.gnu.org/licenses/gpl-3.0.html>. * #L% */ public class Main { public static byte[] merge(byte[] a, byte[] b) { int total = a.length + b.length; byte[] c = new byte[total]; for (int i = 0; i < a.length; i++) { c[i] = a[i]; } for (int i = 0; i < b.length; i++) { c[a.length + i] = b[i]; } return c; } }