commons-collections4-4.4-sources.jar - Apache Commons Collections

commons-collections4-4.4-sources.jar is the source JAR file for Apache Commons Collections 4.2, which provides additional collection handling functionalities on top of JDK library.

JAR File Size and Download Location:

JAR name: commons-collections4-4.4-sources.jar
Target JDK version: 8
Dependency: None
File size: 715,541 bytes
Release date: 05-Jul-2019
Download: Apache Commons Collections

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org/apache/commons/collections4/queue/AbstractQueueDecorator.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.collections4.queue;

import java.util.Queue;

import org.apache.commons.collections4.collection.AbstractCollectionDecorator;

/**
 * Decorates another {@link Queue} to provide additional behaviour.
 * <p>
 * Methods are forwarded directly to the decorated queue.
 * </p>
 * <p>
 * This implementation does not forward the hashCode and equals methods through
 * to the backing object, but relies on Object's implementation. This is
 * necessary as some Queue implementations, e.g. LinkedList, have custom a
 * equals implementation for which symmetry can not be preserved.
 * See class javadoc of AbstractCollectionDecorator for more information.
 * </p>
 *
 * @param <E> the type of the elements in the queue
 * @since 4.0
 */
public abstract class AbstractQueueDecorator<E> extends AbstractCollectionDecorator<E>
        implements Queue<E> {

    /** Serialization version */
    private static final long serialVersionUID = -2629815475789577029L;

    /**
     * Constructor only used in deserialization, do not use otherwise.
     */
    protected AbstractQueueDecorator() {
        super();
    }

    /**
     * Constructor that wraps (not copies).
     *
     * @param queue  the queue to decorate, must not be null
     * @throws NullPointerException if queue is null
     */
    protected AbstractQueueDecorator(final Queue<E> queue) {
        super(queue);
    }

    /**
     * Gets the queue being decorated.
     *
     * @return the decorated queue
     */
    @Override
    protected Queue<E> decorated() {
        return (Queue<E>) super.decorated();
    }

    //-----------------------------------------------------------------------

    @Override
    public boolean offer(final E obj) {
        return decorated().offer(obj);
    }

    @Override
    public E poll() {
        return decorated().poll();
    }

    @Override
    public E peek() {
        return decorated().peek();
    }

    @Override
    public E element() {
        return decorated().element();
    }

    @Override
    public E remove() {
        return decorated().remove();
    }

}

org/apache/commons/collections4/queue/AbstractQueueDecorator.java

 

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File name: commons-collections4-4.4-sources.jar
File size: 715541 bytes
Release date: 2019-07-05
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