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Java example source code file (Immutable.java)
The Immutable.java example source code/* * ==================================================================== * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.http.annotation; import java.lang.annotation.Documented; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.lang.annotation.Target; /** * The class to which this annotation is applied is immutable. This means that * its state cannot be seen to change by callers, which implies that * <ul> * <li> all public fields are final, * <li> all public final reference fields refer to other immutable objects, and * <li> constructors and methods do not publish references to any internal state * which is potentially mutable by the implementation. </li> * </ul> * Immutable objects may still have internal mutable state for purposes of performance * optimization; some state variables may be lazily computed, so long as they are computed * from immutable state and that callers cannot tell the difference. * <p> * Immutable objects are inherently thread-safe; they may be passed between threads or * published without synchronization. * <p> * Based on code developed by Brian Goetz and Tim Peierls and concepts * published in 'Java Concurrency in Practice' by Brian Goetz, Tim Peierls, * Joshua Bloch, Joseph Bowbeer, David Holmes and Doug Lea. */ @Documented @Target(ElementType.TYPE) @Retention(RetentionPolicy.CLASS) // The original version used RUNTIME public @interface Immutable { } Other Java examples (source code examples)Here is a short list of links related to this Java Immutable.java source code file: |
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