Java tutorial
//package com.java2s; /* * Copyright DbMaintain.org * * 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.HashSet; import java.util.Set; import static java.util.Arrays.asList; public class Main { /** * Converts the given array of elements to a set. * * @param elements The elements * @return The elements as a set, empty if elements was null */ public static <T> Set<T> asSet(T... elements) { Set<T> result = new HashSet<T>(); if (elements == null) { return result; } result.addAll(asList(elements)); return result; } }