1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * https://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 package org.apache.commons.compress.utils;
21
22 import java.util.Collections;
23 import java.util.HashSet;
24
25 /**
26 * Set utilities
27 *
28 * @since 1.13
29 */
30 public class Sets {
31
32 /**
33 * Creates a new HashSet filled with the given elements
34 *
35 * @param elements the elements to fill the new set
36 * @param <E> type of elements contained in new set
37 * @return A new HasSet
38 */
39 @SafeVarargs
40 public static <E> HashSet<E> newHashSet(final E... elements) {
41 final HashSet<E> set = new HashSet<>(elements != null ? elements.length : 0);
42 if (elements != null) {
43 Collections.addAll(set, elements);
44 }
45 return set;
46 }
47
48 private Sets() {
49 // Do not instantiate
50 }
51 }