001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019
020package org.apache.commons.compress.utils;
021
022import java.util.Collections;
023import java.util.HashSet;
024
025/**
026 * Set utilities
027 *
028 * @since 1.13
029 */
030public class Sets {
031
032    /**
033     * Creates a new HashSet filled with the given elements
034     *
035     * @param elements the elements to fill the new set
036     * @param <E>      type of elements contained in new set
037     * @return A new HasSet
038     */
039    @SafeVarargs
040    public static <E> HashSet<E> newHashSet(final E... elements) {
041        final HashSet<E> set = new HashSet<>(elements != null ? elements.length : 0);
042        if (elements != null) {
043            Collections.addAll(set, elements);
044        }
045        return set;
046    }
047
048    private Sets() {
049        // Do not instantiate
050    }
051}