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/jmx/mbeanserver/NamedObject.java

/*
 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 */

package com.sun.jmx.mbeanserver;

import javax.management.* ;



/**
 * This class is used for storing a pair (name, object) where name is
 * an object name and object is a reference to the object.
 *
 * @since 1.5
 */
public class NamedObject  {


    /**
     * Object name.
     */
    private final ObjectName name;

    /**
     * Object reference.
     */
    private final DynamicMBean object;


    /**
     * Allows a named object to be created.
     *
     *@param objectName The object name of the object.
     *@param object A reference to the object.
     */
    public NamedObject(ObjectName objectName, DynamicMBean object)  {
        if (objectName.isPattern()) {
            throw new RuntimeOperationsException(new IllegalArgumentException("Invalid name->"+ objectName.toString()));
        }
        this.name= objectName;
        this.object= object;
    }

    /**
     * Allows a named object to be created.
     *
     *@param objectName The string representation of the object name of the object.
     *@param object A reference to the object.
     *
     *@exception MalformedObjectNameException The string passed does not have the format of a valid ObjectName
     */
    public NamedObject(String objectName, DynamicMBean object) throws MalformedObjectNameException{
        ObjectName objName= new ObjectName(objectName);
        if (objName.isPattern()) {
            throw new RuntimeOperationsException(new IllegalArgumentException("Invalid name->"+ objName.toString()));
        }
        this.name= objName;
        this.object= object;
    }

    /**
     * Compares the current object name with another object name.
     *
     * @param object  The Named Object that the current object name is to be
     *        compared with.
     *
     * @return  True if the two named objects are equal, otherwise false.
     */
    public boolean equals(Object object)  {
        if (this == object) return true;
        if (object == null) return false;
        if (!(object instanceof NamedObject)) return false;
        NamedObject no = (NamedObject) object;
        return name.equals(no.getName());
    }


    /**
     * Returns a hash code for this named object.
     *
     */
    public int hashCode() {
        return name.hashCode();
    }

    /**
     * Get the object name.
     */
    public ObjectName getName()  {
        return name;
    }

    /**
     * Get the object
     */
    public DynamicMBean getObject()  {
        return object;
   }

 }

⏎ com/sun/jmx/mbeanserver/NamedObject.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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