Here you can find the source of addFirst(List
public static List<Object> addFirst(List<Object> list, Object values)
//package com.java2s; /*/*from w ww. j av a 2 s.c o m*/ * Copyright 2007 The Fornax Project Team, including 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.List; public class Main { public static List<Object> addFirst(List<Object> list, Object values) { list.add(0, values); return list; } }