Here you can find the source of combine(int size, Object[]... arrays)
public static Object[] combine(int size, Object[]... arrays)
//package com.java2s; /*/*w w w. j a v a 2 s . co m*/ * Copyright 2011, Mysema Ltd * * 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(int size, Object[]... arrays) { int offset = 0; Object[] target = new Object[size]; for (Object[] arr : arrays) { System.arraycopy(arr, 0, target, offset, arr.length); offset += arr.length; } return target; } }