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/portable/RemarshalException.java

/*
 * Copyright (c) 1998, 1999, 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.portable;

/**
This class is used for reporting locate forward exceptions and object forward
GIOP messages back to the ORB. In this case the ORB must remarshal the request
before trying again.
Stubs which use the stream-based model shall catch the <code>RemarshalException</code>
which is potentially thrown from the <code>_invoke()</code> method of <code>ObjectImpl</code>.
Upon catching the exception, the stub shall immediately remarshal the request by calling
<code>_request()</code>, marshalling the arguments (if any), and then calling
<code>_invoke()</code>. The stub shall repeat this process until <code>_invoke()</code>
returns normally or raises some exception other than <code>RemarshalException</code>.
*/

public final class RemarshalException extends Exception {
    /**
     * Constructs a RemarshalException.
     */
    public RemarshalException() {
        super();
    }
}

⏎ org/omg/CORBA/portable/RemarshalException.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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