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Apache Commons Lang v3 Source Code Files
Apache Commons Lang 3 is the 3rd version of Apache Commons Lang, which provides a host of helper utilities for the java.lang API.
Apache Commons Lang 3 Source Code files are provided in both binary packge (commons-lang3-3.12.0-bin.zip) and source package (commons-lang3-3.12.0-src.zip). You can download them at Apache Commons Lang Website.
Apache Commons Lang 3 Source Code has no dependencies and is compatible with Java 8 and newer versions. You can compile it to generate your own version of Apache Commons Lang 3 JAR file.
You can also browse the source code below:
✍: FYIcenter
⏎ org/apache/commons/lang3/concurrent/ConstantInitializer.java
/* * 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. */ package org.apache.commons.lang3.concurrent; import java.util.Objects; /** * <p> * A very simple implementation of the {@link ConcurrentInitializer} interface * which always returns the same object. * </p> * <p> * An instance of this class is passed a reference to an object when it is * constructed. The {@link #get()} method just returns this object. No * synchronization is required. * </p> * <p> * This class is useful for instance for unit testing or in cases where a * specific object has to be passed to an object which expects a * {@link ConcurrentInitializer}. * </p> * * @since 3.0 * @param <T> the type of the object managed by this initializer */ public class ConstantInitializer<T> implements ConcurrentInitializer<T> { /** Constant for the format of the string representation. */ private static final String FMT_TO_STRING = "ConstantInitializer@%d [ object = %s ]"; /** Stores the managed object. */ private final T object; /** * Creates a new instance of {@code ConstantInitializer} and initializes it * with the object to be managed. The {@code get()} method will always * return the object passed here. This class does not place any restrictions * on the object. It may be <b>null</b>, then {@code get()} will return * <b>null</b>, too. * * @param obj the object to be managed by this initializer */ public ConstantInitializer(final T obj) { object = obj; } /** * Directly returns the object that was passed to the constructor. This is * the same object as returned by {@code get()}. However, this method does * not declare that it throws an exception. * * @return the object managed by this initializer */ public final T getObject() { return object; } /** * Returns the object managed by this initializer. This implementation just * returns the object passed to the constructor. * * @return the object managed by this initializer * @throws ConcurrentException if an error occurs */ @Override public T get() throws ConcurrentException { return getObject(); } /** * Returns a hash code for this object. This implementation returns the hash * code of the managed object. * * @return a hash code for this object */ @Override public int hashCode() { return getObject() != null ? getObject().hashCode() : 0; } /** * Compares this object with another one. This implementation returns * <b>true</b> if and only if the passed in object is an instance of * {@code ConstantInitializer} which refers to an object equals to the * object managed by this instance. * * @param obj the object to compare to * @return a flag whether the objects are equal */ @Override public boolean equals(final Object obj) { if (this == obj) { return true; } if (!(obj instanceof ConstantInitializer<?>)) { return false; } final ConstantInitializer<?> c = (ConstantInitializer<?>) obj; return Objects.equals(getObject(), c.getObject()); } /** * Returns a string representation for this object. This string also * contains a string representation of the object managed by this * initializer. * * @return a string for this object */ @Override public String toString() { return String.format(FMT_TO_STRING, Integer.valueOf(System.identityHashCode(this)), String.valueOf(getObject())); } }
⏎ org/apache/commons/lang3/concurrent/ConstantInitializer.java
Or download all of them as a single archive file:
File name: commons-lang3-3.12.0-sources.jar File size: 651724 bytes Release date: 2020-01-22 Download
⇒ Download and Install commons-lang3-3.8.1-bin.zip
⇐ Download Apache Commons Lang v3 Source Package
2022-10-19, 151078👍, 3💬
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