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/spi/ior/IOR.java

/*
 * Copyright (c) 2002, 2003, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package com.sun.corba.se.spi.ior;

import java.util.List ;
import java.util.Iterator ;

import com.sun.corba.se.spi.orb.ORBVersion ;

import com.sun.corba.se.spi.ior.iiop.GIOPVersion ;
import com.sun.corba.se.spi.ior.iiop.IIOPProfile ;

import com.sun.corba.se.spi.orb.ORB ;

/** An IOR is represented as a list of profiles.
* Only instances of TaggedProfile are contained in the list.
*/
public interface IOR extends List, Writeable, MakeImmutable
{
    ORB getORB() ;

    /** Return the type id string from the IOR.
    */
    String getTypeId() ;

    /** Return an iterator that iterates over tagged profiles with
    * identifier id.  It is not possible to modify the list through this
    * iterator.
    */
    Iterator iteratorById( int id ) ;

    /** Return a representation of this IOR in the standard GIOP stringified
     * format that begins with "IOR:".
     */
    String stringify() ;

    /** Return a representation of this IOR in the standard GIOP marshalled
     * form.
     */
    org.omg.IOP.IOR getIOPIOR() ;

    /** Return true if this IOR has no profiles.
     */
    boolean isNil() ;

    /** Return true if this IOR is equivalent to ior.  Here equivalent means
     * that the typeids are the same, they have the same number of profiles,
     * and each profile is equivalent to the corresponding profile.
     */
    boolean isEquivalent(IOR ior) ;

    /** Return the IORTemplate for this IOR.  This is simply a list
     * of all TaggedProfileTemplates derived from the TaggedProfiles
     * of the IOR.
     */
    IORTemplateList getIORTemplates() ;

    /** Return the first IIOPProfile in this IOR.
     * XXX THIS IS TEMPORARY FOR BACKWARDS COMPATIBILITY AND WILL BE REMOVED
     * SOON!
     */
    IIOPProfile getProfile() ;
}

⏎ com/sun/corba/se/spi/ior/IOR.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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