|
Java example source code file (Supplier.java)
The Supplier.java Java example source code/* * 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; /** * A class that can supply objects of a single type; a pre-Java-8 version of {@code * 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>See the Guava User Guide article on . * * <h3>For Java 8+ users * * <p>This interface is now a legacy type. Use {@code java.util.function.Supplier} (or the * appropriate primitive specialization such as {@code IntSupplier}) instead whenever possible. * Otherwise, at least reduce <i>explicit dependencies on this type by using lambda expressions * or method references instead of classes, leaving your code easier to migrate in the future. * * <p>To use an existing supplier instance (say, named {@code supplier}) in a context where the * <i>other type of supplier is expected, use the method reference {@code supplier::get}. A * future version of {@code com.google.common.base.Supplier} will be made to <i>extend {@code * java.util.function.Supplier}, making conversion code necessary only in one direction. At that * time, this interface will be officially discouraged. * * @author Harry Heymann * @since 2.0 */ @GwtCompatible public interface 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 T get(); } |
... this post is sponsored by my books ... | |
#1 New Release! |
FP Best Seller |
Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.
A percentage of advertising revenue from
pages under the /java/jwarehouse
URI on this website is
paid back to open source projects.