@@ -0,0 +1,1405 @@
+/*%0A * Java Genetic Algorithm Library (@__identifier__@).%0A * Copyright (c) @__year__@ Franz Wilhelmst%C3%B6tter%0A *%0A * Licensed under the Apache License, Version 2.0 (the %22License%22);%0A * you may not use this file except in compliance with the License.%0A * You may obtain a copy of the License at%0A *%0A *      http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software%0A * distributed under the License is distributed on an %22AS IS%22 BASIS,%0A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A * See the License for the specific language governing permissions and%0A * limitations under the License.%0A *%0A * Author:%0A *    Franz Wilhelmst%C3%B6tter (franz.wilhelmstoetter@gmx.at)%0A */%0Apackage org.jenetics.internal.util;%0A%0Aimport static java.util.Objects.requireNonNull;%0A%0Aimport java.util.function.Supplier;%0A%0A/**%0A * @author %3Ca href=%22mailto:franz.wilhelmstoetter@gmx.at%22%3EFranz Wilhelmst%C3%B6tter%3C/a%3E%0A * @since 3.0%0A * @version 3.0 &mdash; %3Cem%3E$Date: 2014-09-05 $%3C/em%3E%0A */%0Apublic class Lazy%3CT%3E %7B%0A%0A%09private final Supplier%3CT%3E _supplier;%0A%09private T _value = null;%0A%0A%09private Lazy(final Supplier%3CT%3E supplier) %7B%0A%09%09_supplier = requireNonNull(supplier);%0A%09%7D%0A%0A%09public synchronized T get() %7B%0A%09%09if (_value == null) %7B%0A%09%09%09_value = _supplier.get();%0A%09%09%7D%0A%0A%09%09return _value;%0A%09%7D%0A%0A%09public static %3CT%3E Lazy%3CT%3E of(final Supplier%3CT%3E supplier) %7B%0A%09%09return new Lazy%3C%3E(supplier);%0A%09%7D%0A%0A%7D%0A

Add 'Lazy' evaluation class.