commons-collections4-4.2-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-collections4-4.2-sources.jar
Target JDK version: 1.7
Dependency: None
File size: 708,599 bytes
Release date: 08-Jul-2018
Download: Apache Commons Collections

⏎ org/apache/commons/collections4/set/AbstractSerializableSetDecorator.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.set;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Collection;
import java.util.Set;

/**
 * Serializable subclass of AbstractSetDecorator.
 *
 * @param <E> the type of the elements in this set
 * @since 3.1
 */
public abstract class AbstractSerializableSetDecorator<E>
        extends AbstractSetDecorator<E> {

    /** Serialization version */
    private static final long serialVersionUID = 1229469966212206107L;

    /**
     * Constructor.
     *
     * @param set  the list to decorate, must not be null
     * @throws NullPointerException if set is null
     */
    protected AbstractSerializableSetDecorator(final Set<E> set) {
        super(set);
    }

    //-----------------------------------------------------------------------
    /**
     * Write the set out using a custom routine.
     *
     * @param out  the output stream
     * @throws IOException if an error occurs while writing to the stream
     */
    private void writeObject(final ObjectOutputStream out) throws IOException {
        out.defaultWriteObject();
        out.writeObject(decorated());
    }

    /**
     * Read the set in using a custom routine.
     *
     * @param in  the input stream
     * @throws IOException if an error occurs while reading from the stream
     * @throws ClassNotFoundException if an object read from the stream can not be loaded
     */
    @SuppressWarnings("unchecked")
    private void readObject(final ObjectInputStream in) throws IOException, ClassNotFoundException {
        in.defaultReadObject();
        setCollection((Collection<E>) in.readObject());
    }

}

⏎ org/apache/commons/collections4/set/AbstractSerializableSetDecorator.java

Or download all of them as a single archive file:

File name: commons-collections4-4.2-sources.jar
File size: 708599 bytes
Release date: 2018-07-08
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