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/transport/TransportDefault.java

/*
 * Copyright (c) 2002, 2004, 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.transport ;

import com.sun.corba.se.spi.protocol.CorbaClientDelegate ;
import com.sun.corba.se.spi.protocol.ClientDelegateFactory ;
import com.sun.corba.se.spi.transport.CorbaContactInfoList ;
import com.sun.corba.se.spi.transport.CorbaContactInfoListFactory ;
import com.sun.corba.se.spi.transport.ReadTimeouts;
import com.sun.corba.se.spi.transport.ReadTimeoutsFactory;
import com.sun.corba.se.spi.orb.ORB ;
import com.sun.corba.se.spi.ior.IOR ;

// Internal imports, not used in the interface to this package
import com.sun.corba.se.impl.protocol.CorbaClientDelegateImpl ;
import com.sun.corba.se.impl.transport.CorbaContactInfoListImpl;
import com.sun.corba.se.impl.transport.ReadTCPTimeoutsImpl;

/** This class provices standard building blocks for the ORB, as do all Default classes
 * in the various packages.
 */
public abstract class TransportDefault {
    private TransportDefault() {}

    public static CorbaContactInfoListFactory makeCorbaContactInfoListFactory(
        final ORB broker )
    {
        return new CorbaContactInfoListFactory() {
            public void setORB(ORB orb) { }
            public CorbaContactInfoList create( IOR ior ) {
                return new CorbaContactInfoListImpl(
                    (com.sun.corba.se.spi.orb.ORB)broker, ior ) ;
            }
        };
    }

    public static ClientDelegateFactory makeClientDelegateFactory(
        final ORB broker )
    {
        return new ClientDelegateFactory() {
            public CorbaClientDelegate create( CorbaContactInfoList info ) {
                return new CorbaClientDelegateImpl(
                    (com.sun.corba.se.spi.orb.ORB)broker, info ) ;
            }
        };
    }

    public static IORTransformer makeIORTransformer(
        final ORB broker )
    {
        return null ;
    }

    public static ReadTimeoutsFactory makeReadTimeoutsFactory()
    {
        return new ReadTimeoutsFactory() {
            public ReadTimeouts create(int initial_wait_time,
                                       int max_wait_time,
                                       int max_giop_hdr_wait_time,
                                       int backoff_percent_factor)
            {
                return new ReadTCPTimeoutsImpl(
                    initial_wait_time,
                    max_wait_time,
                    max_giop_hdr_wait_time,
                    backoff_percent_factor);
            };
        };
    }
}

// End of file.

⏎ com/sun/corba/se/spi/transport/TransportDefault.java

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