Java tutorial
//package com.java2s; /* * Copyright (C) 2015 Ticketmaster * * 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 long[] toPrimitives(Long... objects) { long[] primitives = new long[objects.length]; for (int i = 0; i < objects.length; i++) primitives[i] = objects[i]; return primitives; } public static long[] toPrimitives(List<Long> objects) { return toPrimitives(objects.toArray(new Long[objects.size()])); } }