01 /*
02 * Java Genetic Algorithm Library (jenetics-3.0.0).
03 * Copyright (c) 2007-2014 Franz Wilhelmstötter
04 *
05 * Licensed under the Apache License, Version 2.0 (the "License");
06 * you may not use this file except in compliance with the License.
07 * You may obtain a copy of the License at
08 *
09 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 * Author:
18 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
19 */
20 package org.jenetics.util;
21
22 import java.util.stream.Stream;
23
24 /**
25 * @param <T> the object type this factory creates.
26 *
27 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
28 * @since 1.0
29 * @version 3.0 — <em>$Date: 2014-12-28 $</em>
30 */
31 @FunctionalInterface
32 public interface Factory<T> {
33
34 /**
35 * Create a new instance of type T.
36 *
37 * @return a new instance of type T
38 */
39 public T newInstance();
40
41 /**
42 * Return a new stream of object instances, created by this factory.
43 *
44 * @return a stream of objects, created by this factory
45 */
46 public default Stream<T> instances() {
47 return Stream.generate(this::newInstance);
48 }
49
50 }
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