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/dnd/DragGestureListener.java

/*
 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.awt.dnd;

import java.util.EventListener;

/**
 * The listener interface for receiving drag gesture events.
 * This interface is intended for a drag gesture recognition
 * implementation. See a specification for {@code DragGestureRecognizer}
 * for details on how to register the listener interface.
 * Upon recognition of a drag gesture the {@code
 * DragGestureRecognizer} calls this interface's
 * {@link #dragGestureRecognized dragGestureRecognized()}
 * method and passes a {@code DragGestureEvent}.

 *
 * @see java.awt.dnd.DragGestureRecognizer
 * @see java.awt.dnd.DragGestureEvent
 * @see java.awt.dnd.DragSource
 */

 public interface DragGestureListener extends EventListener {

    /**
     * This method is invoked by the {@code DragGestureRecognizer}
     * when the {@code DragGestureRecognizer} detects a platform-dependent
     * drag initiating gesture. To initiate the drag and drop operation,
     * if appropriate, {@link DragGestureEvent#startDrag startDrag()} method on
     * the {@code DragGestureEvent} has to be invoked.
     * <P>
     * @see java.awt.dnd.DragGestureRecognizer
     * @see java.awt.dnd.DragGestureEvent
     * @param dge the <code>DragGestureEvent</code> describing
     * the gesture that has just occurred
     */

     void dragGestureRecognized(DragGestureEvent dge);
}

⏎ java/awt/dnd/DragGestureListener.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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