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/peer/DialogPeer.java

/*
 * Copyright (c) 1995, 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.peer;

import java.awt.*;

/**
 * The peer interface for {@link Dialog}. This adds a couple of dialog specific
 * features to the {@link WindowPeer} interface.
 *
 * The peer interfaces are intended only for use in porting
 * the AWT. They are not intended for use by application
 * developers, and developers should not implement peers
 * nor invoke any of the peer methods directly on the peer
 * instances.
 */
public interface DialogPeer extends WindowPeer {

    /**
     * Sets the title on the dialog window.
     *
     * @param title the title to set
     *
     * @see Dialog#setTitle(String)
     */
    void setTitle(String title);

    /**
     * Sets if the dialog should be resizable or not.
     *
     * @param resizeable {@code true} when the dialog should be resizable,
     *        {@code false} if not
     *
     * @see Dialog#setResizable(boolean)
     */
    void setResizable(boolean resizeable);

    /**
     * Block the specified windows. This is used for modal dialogs.
     *
     * @param windows the windows to block
     *
     * @see Dialog#modalShow()
     * @see Dialog#blockWindows()
     */
    void blockWindows(java.util.List<Window> windows);
}

⏎ java/awt/peer/DialogPeer.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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