JRE 8 rt.jar is the JAR file for JRE 8 RT (Runtime) libraries. JRE (Java Runtime) 8 is the runtime environment included in JDK 8. JRE 8 rt.jar libraries are divided into 6 packages:

com.* - Internal Oracle and Sun Microsystems libraries
java.* - Standard Java API libraries.
javax.* - Extended Java API libraries.
jdk.* -  JDK supporting libraries.
org.* - Third party libraries.
sun.* - Old libraries developed by Sun Microsystems.

JAR File Information:

Directory of C:\fyicenter\jdk-1.8.0_191\jre\lib
      63,596,151 rt.jar

Here is the list of Java classes of the java.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.

⏎ java/awt/event/AWTEventListenerProxy.java

/*
 * Copyright (c) 2001, 2007, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package java.awt.event;

import java.util.EventListenerProxy;
import java.awt.AWTEvent;

/**
 * A class which extends the {@code EventListenerProxy}
 * specifically for adding an {@code AWTEventListener}
 * for a specific event mask.
 * Instances of this class can be added as {@code AWTEventListener}s
 * to a {@code Toolkit} object.
 * <p>
 * The {@code getAWTEventListeners} method of {@code Toolkit}
 * can return a mixture of {@code AWTEventListener}
 * and {@code AWTEventListenerProxy} objects.
 *
 * @see java.awt.Toolkit
 * @see java.util.EventListenerProxy
 * @since 1.4
 */
public class AWTEventListenerProxy
        extends EventListenerProxy<AWTEventListener>
        implements AWTEventListener {

    private final long eventMask;

    /**
     * Constructor which binds the {@code AWTEventListener}
     * to a specific event mask.
     *
     * @param eventMask  the bitmap of event types to receive
     * @param listener   the listener object
     */
    public AWTEventListenerProxy (long eventMask, AWTEventListener listener) {
        super(listener);
        this.eventMask = eventMask;
    }

    /**
     * Forwards the AWT event to the listener delegate.
     *
     * @param event  the AWT event
     */
    public void eventDispatched(AWTEvent event) {
        getListener().eventDispatched(event);
    }

    /**
     * Returns the event mask associated with the listener.
     *
     * @return the event mask associated with the listener
     */
    public long getEventMask() {
        return this.eventMask;
    }
}

⏎ java/awt/event/AWTEventListenerProxy.java

Or download all of them as a single archive file:

File name: jre-rt-java-1.8.0_191-src.zip
File size: 6664831 bytes
Release date: 2018-10-28
Download 

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