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 com.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.

⏎ com/sun/jmx/mbeanserver/SunJmxMBeanServer.java

/*
 * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package com.sun.jmx.mbeanserver;

import javax.management.MBeanServer;
import javax.management.MBeanServerDelegate;


/**
 * Extends the MBeanServer interface to
 * provide methods for getting the MetaData and MBeanServerInstantiator
 * objects associated with an MBeanServer.
 *
 * @since 1.5
 */
public interface SunJmxMBeanServer
    extends MBeanServer {

    /**
     * Return the MBeanInstantiator associated to this MBeanServer.
     * @exception UnsupportedOperationException if
     *            {@link MBeanServerInterceptor}s
     *            are not enabled on this object.
     * @see #interceptorsEnabled
     */
    public MBeanInstantiator getMBeanInstantiator();

    /**
     * Tell whether {@link MBeanServerInterceptor}s are enabled on this
     * object.
     * @return <code>true</code> if {@link MBeanServerInterceptor}s are
     *         enabled.
     * @see #getMBeanServerInterceptor
     * @see #setMBeanServerInterceptor
     * @see #getMBeanInstantiator
     * @see com.sun.jmx.mbeanserver.JmxMBeanServerBuilder
     **/
    public boolean interceptorsEnabled();

    /**
     * Return the MBeanServerInterceptor.
     * @exception UnsupportedOperationException if
     *            {@link MBeanServerInterceptor}s
     *            are not enabled on this object.
     * @see #interceptorsEnabled
     **/
    public MBeanServer getMBeanServerInterceptor();

    /**
     * Set the MBeanServerInterceptor.
     * @exception UnsupportedOperationException if
     *            {@link MBeanServerInterceptor}s
     *            are not enabled on this object.
     * @see #interceptorsEnabled
     **/
    public void setMBeanServerInterceptor(MBeanServer interceptor);

    /**
     * <p>Return the MBeanServerDelegate representing the MBeanServer.
     * Notifications can be sent from the MBean server delegate using
     * the method {@link MBeanServerDelegate#sendNotification}
     * in the returned object.</p>
     *
     */
    public MBeanServerDelegate getMBeanServerDelegate();

}

⏎ com/sun/jmx/mbeanserver/SunJmxMBeanServer.java

Or download all of them as a single archive file:

File name: jre-rt-com-1.8.0_191-src.zip
File size: 8099783 bytes
Release date: 2018-10-28
Download 

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