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/ior/ObjectAdapterIdNumber.java

/*
 * Copyright (c) 2001, 2002, 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.ior ;

import java.util.Iterator ;
import org.omg.CORBA_2_3.portable.OutputStream ;

/** ObjectAdapterIdNumber is used to represent pre-JDK 1.4 POA adapter
 * IDs.  The POA ID was simply represented as a single integer, which was
 * mapped to the actual POA instance.  Here, we just represent these
 * internally as arrays of the form { "OldRootPOA", "<number>" },
 * and provide an extra method to get the number back.
 */
public class ObjectAdapterIdNumber extends ObjectAdapterIdArray {
    private int poaid ;

    public ObjectAdapterIdNumber( int poaid )
    {
        super( "OldRootPOA", Integer.toString( poaid ) ) ;
        this.poaid = poaid ;
    }

    public int getOldPOAId()
    {
        return poaid ;
    }
}

⏎ com/sun/corba/se/impl/ior/ObjectAdapterIdNumber.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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