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/SpecialMethod.java

/*
 * Copyright (c) 1998, 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.impl.protocol ;

import javax.rmi.CORBA.Tie;

import org.omg.CORBA.SystemException ;
import org.omg.CORBA.NO_IMPLEMENT ;
import org.omg.CORBA.OBJECT_NOT_EXIST ;
import org.omg.CORBA.CompletionStatus ;
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.OutputStream;

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

import com.sun.corba.se.spi.protocol.CorbaMessageMediator;

import com.sun.corba.se.spi.logging.CORBALogDomains;

import com.sun.corba.se.impl.logging.ORBUtilSystemException;

import com.sun.corba.se.spi.oa.NullServant ;

public abstract class SpecialMethod {
    public abstract boolean isNonExistentMethod() ;
    public abstract String getName();
    public abstract CorbaMessageMediator invoke(java.lang.Object servant,
                                                CorbaMessageMediator request,
                                                byte[] objectId,
                                                ObjectAdapter objectAdapter);

    public static final SpecialMethod getSpecialMethod(String operation) {
        for(int i = 0; i < methods.length; i++)
            if (methods[i].getName().equals(operation))
                return methods[i];
        return null;
    }

    static SpecialMethod[] methods = {
        new IsA(),
        new GetInterface(),
        new NonExistent(),
        new NotExistent()
    };
}

class NonExistent extends SpecialMethod {
    public boolean isNonExistentMethod()
    {
        return true ;
    }

    public String getName() {           // _non_existent
        return "_non_existent";
    }

    public CorbaMessageMediator invoke(java.lang.Object servant,
                                       CorbaMessageMediator request,
                                       byte[] objectId,
                                       ObjectAdapter objectAdapter)
    {
        boolean result = (servant == null) || (servant instanceof NullServant) ;
        CorbaMessageMediator response =
            request.getProtocolHandler().createResponse(request, null);
        ((OutputStream)response.getOutputObject()).write_boolean(result);
        return response;
    }
}

class NotExistent extends NonExistent {
    public String getName() {           // _not_existent
        return "_not_existent";
    }
}

class IsA extends SpecialMethod  {      // _is_a
    public boolean isNonExistentMethod()
    {
        return false ;
    }

    public String getName() {
        return "_is_a";
    }
    public CorbaMessageMediator invoke(java.lang.Object servant,
                                       CorbaMessageMediator request,
                                       byte[] objectId,
                                       ObjectAdapter objectAdapter)
    {
        if ((servant == null) || (servant instanceof NullServant)) {
            ORB orb = (ORB)request.getBroker() ;
            ORBUtilSystemException wrapper = ORBUtilSystemException.get( orb,
                CORBALogDomains.OA_INVOCATION ) ;

            return request.getProtocolHandler().createSystemExceptionResponse(
                request, wrapper.badSkeleton(), null);
        }

        String[] ids = objectAdapter.getInterfaces( servant, objectId );
        String clientId =
            ((InputStream)request.getInputObject()).read_string();
        boolean answer = false;
        for(int i = 0; i < ids.length; i++)
            if (ids[i].equals(clientId)) {
                answer = true;
                break;
            }

        CorbaMessageMediator response =
            request.getProtocolHandler().createResponse(request, null);
        ((OutputStream)response.getOutputObject()).write_boolean(answer);
        return response;
    }
}

class GetInterface extends SpecialMethod  {     // _get_interface
    public boolean isNonExistentMethod()
    {
        return false ;
    }

    public String getName() {
        return "_interface";
    }
    public CorbaMessageMediator invoke(java.lang.Object servant,
                                       CorbaMessageMediator request,
                                       byte[] objectId,
                                       ObjectAdapter objectAdapter)
    {
        ORB orb = (ORB)request.getBroker() ;
        ORBUtilSystemException wrapper = ORBUtilSystemException.get( orb,
            CORBALogDomains.OA_INVOCATION ) ;

        if ((servant == null) || (servant instanceof NullServant)) {
            return request.getProtocolHandler().createSystemExceptionResponse(
                request, wrapper.badSkeleton(), null);
        } else {
            return request.getProtocolHandler().createSystemExceptionResponse(
                request, wrapper.getinterfaceNotImplemented(), null);
        }
    }
}

// End of file.

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