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/corba/se/impl/protocol/AddressingDispositionException.java

/*
 * Copyright (c) 2001, 2003, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package com.sun.corba.se.impl.protocol;

import com.sun.corba.se.impl.protocol.giopmsgheaders.KeyAddr;

/**
 * This exception is thrown while reading GIOP 1.2 Request, LocateRequest
 * to indicate that a TargetAddress disposition is unacceptable.
 * If this exception is caught explicitly, this need to be rethrown. This
 * is eventually handled within RequestPRocessor and an appropriate reply
 * is sent back to the client.
 *
 * GIOP 1.2 allows three dispositions : KeyAddr (ObjectKey), ProfileAddr (ior
 * profile), IORAddressingInfo (IOR). If the ORB does not support the
 * disposition contained in the GIOP Request / LocateRequest 1.2 message,
 * then it sends a Reply / LocateReply indicating the correct disposition,
 * which the client ORB shall use to transparently retry the request
 * with the correct disposition.
 *
 */
public class AddressingDispositionException extends RuntimeException {

    private short expectedAddrDisp = KeyAddr.value;

    public AddressingDispositionException(short expectedAddrDisp) {
        this.expectedAddrDisp = expectedAddrDisp;
    }

    public short expectedAddrDisp() {
        return this.expectedAddrDisp;
    }
}

⏎ com/sun/corba/se/impl/protocol/AddressingDispositionException.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 

⇒ Backup JDK 8 Installation Directory

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

⇑ Download and Use JDK 8

⇑⇑ FAQ for JDK (Java Development Kit)