| /* |
| * Copyright (C) 2007 The Guava Authors |
| * |
| * 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. |
| */ |
| |
| package com.google.common.base; |
| |
| import com.google.common.annotations.GwtCompatible; |
| import com.google.errorprone.annotations.CanIgnoreReturnValue; |
| |
| /** |
| * Legacy version of {@link java.util.function.Supplier java.util.function.Supplier}. Semantically, |
| * this could be a factory, generator, builder, closure, or something else entirely. No guarantees |
| * are implied by this interface. |
| * |
| * <p>The {@link Suppliers} class provides common suppliers and related utilities. |
| * |
| * <p>As this interface extends {@code java.util.function.Supplier}, an instance of this type can be |
| * used as a {@code java.util.function.Supplier} directly. To use a {@code |
| * java.util.function.Supplier} in a context where a {@code com.google.common.base.Supplier} is |
| * needed, use {@code supplier::get}. |
| * |
| * <p>See the Guava User Guide article on <a |
| * href="https://github.com/google/guava/wiki/FunctionalExplained">the use of {@code Function}</a>. |
| * |
| * @author Harry Heymann |
| * @since 2.0 |
| */ |
| @GwtCompatible |
| @FunctionalInterface |
| public interface Supplier<T> extends java.util.function.Supplier<T> { |
| /** |
| * Retrieves an instance of the appropriate type. The returned object may or may not be a new |
| * instance, depending on the implementation. |
| * |
| * @return an instance of the appropriate type |
| */ |
| @CanIgnoreReturnValue |
| @Override |
| T get(); |
| } |