Here you can find the source of combine(Object[] first, Object[] last)
public static Object[] combine(Object[] first, Object[] last)
//package com.java2s; /**/*from w w w. j a v a 2s . com*/ * Copyright (C) 2017 Lucifer Wong * * 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. */ public class Main { public static Object[] combine(Object[] first, Object[] last) { if (first.length == 0 && last.length == 0) { return null; } Object[] result = new Object[first.length + last.length]; System.arraycopy(first, 0, result, 0, first.length); System.arraycopy(last, 0, result, first.length, last.length); return result; } }