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

⏎ org/omg/CORBA/ServiceInformation.java

/*
 * Copyright (c) 1998, 2001, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package org.omg.CORBA;


/** An IDL struct in the CORBA module that
 *  stores information about a CORBA service available in the
 *  ORB implementation and is obtained from the <tt>ORB.get_service_information</tt>
 *  method.
 */
public final class ServiceInformation implements org.omg.CORBA.portable.IDLEntity
{
    /** Array of ints representing service options.
    */
    public int[] service_options;

    /** Array of ServiceDetails giving more details about the service.
    */
    public org.omg.CORBA.ServiceDetail[] service_details;

    /** Constructs a ServiceInformation object with empty service_options
    * and service_details.
    */
    public ServiceInformation() { }

    /** Constructs a ServiceInformation object with the given service_options
    * and service_details.
    * @param __service_options An array of ints describing the service options.
    * @param __service_details An array of ServiceDetails describing the service
    * details.
    */
    public ServiceInformation(int[] __service_options,
                              org.omg.CORBA.ServiceDetail[] __service_details)
    {
        service_options = __service_options;
        service_details = __service_details;
    }
}

⏎ org/omg/CORBA/ServiceInformation.java

Or download all of them as a single archive file:

File name: jre-rt-org-1.8.0_191-src.zip
File size: 951125 bytes
Release date: 2018-10-28
Download 

⇒ JRE 8 rt.jar - com.* Package Source Code

⇐ JRE 8 rt.jar - javax.* Package Source Code

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