Here you can find the source of copyOf(T[] original)
public static <T> T[] copyOf(T[] original)
//package com.java2s; /*//from ww w. ja v a 2s .c om * Copyright 2015 S. Webber * * 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 { /** Returns a copy of the specified array. */ public static <T> T[] copyOf(T[] original) { return Arrays.copyOf(original, original.length); } }