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 org.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.

⏎ org/omg/CosNaming/NamingContextExtOperations.java

package org.omg.CosNaming;


/**
* org/omg/CosNaming/NamingContextExtOperations.java .
* Generated by the IDL-to-Java compiler (portable), version "3.2"
* from c:/re/workspace/8-2-build-windows-amd64-cygwin/jdk8u191/11896/corba/src/share/classes/org/omg/CosNaming/nameservice.idl
* Saturday, October 6, 2018 9:30:40 AM PDT
*/


/** 
 * <code>NamingContextExt</code> is the extension of <code>NamingContext</code>
 * which
 * contains a set of name bindings in which each name is unique and is
 * part of Interoperable Naming Service.
 * Different names can be bound to an object in the same or different
 * contexts at the same time. Using <tt>NamingContextExt</tt>, you can use
 * URL-based names to bind and resolve. <p>
 * 
 * See <a href="http://www.omg.org/technology/documents/formal/naming_service.htm">
 * CORBA COS 
 * Naming Specification.</a>
 */
public interface NamingContextExtOperations  extends org.omg.CosNaming.NamingContextOperations
{

  /**
 * This operation creates a stringified name from the array of Name
 * components.
 * 
 * @param n Name of the object <p>
 * 
 * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
 * Indicates the name does not identify a binding.<p>
 * 
 */
  String to_string (org.omg.CosNaming.NameComponent[] n) throws org.omg.CosNaming.NamingContextPackage.InvalidName;

  /**
 * This operation  converts a Stringified Name into an  equivalent array
 * of Name Components. 
 * 
 * @param sn Stringified Name of the object <p>
 * 
 * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
 * Indicates the name does not identify a binding.<p>
 * 
 */
  org.omg.CosNaming.NameComponent[] to_name (String sn) throws org.omg.CosNaming.NamingContextPackage.InvalidName;

  /**
 * This operation creates a URL based "iiopname://" format name
 * from the Stringified Name of the object.
 * 
 * @param addr internet based address of the host machine where  Name Service is running <p>
 * @param sn Stringified Name of the object <p>
 * 
 * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
 * Indicates the name does not identify a binding.<p>
 * @exception org.omg.CosNaming.NamingContextPackage.InvalidAddress
 * Indicates the internet based address of the host machine is 
 * incorrect <p>
 * 
 */
  String to_url (String addr, String sn) throws org.omg.CosNaming.NamingContextExtPackage.InvalidAddress, org.omg.CosNaming.NamingContextPackage.InvalidName;

  /**
 * This operation resolves the Stringified name into the object
 * reference. 
 * 
 * @param sn Stringified Name of the object <p>
 * 
 * @exception org.omg.CosNaming.NamingContextPackage.NotFound
 * Indicates there is no object reference for the given name. <p>
 * @exception org.omg.CosNaming.NamingContextPackage.CannotProceed
 * Indicates that the given compound name is incorrect <p>
 * @exception org.omg.CosNaming.NamingContextExtPackage.InvalidName
 * Indicates the name does not identify a binding.<p>
 * 
 */
  org.omg.CORBA.Object resolve_str (String sn) throws org.omg.CosNaming.NamingContextPackage.NotFound, org.omg.CosNaming.NamingContextPackage.CannotProceed, org.omg.CosNaming.NamingContextPackage.InvalidName;
} // interface NamingContextExtOperations

⏎ org/omg/CosNaming/NamingContextExtOperations.java

Or download all of them as a single archive file:

File name: jre-rt-org-1.8.0_191-src.zip
File size: 951125 bytes
Release date: 2018-10-28
Download 

⇒ JRE 8 rt.jar - com.* Package Source Code

⇐ JRE 8 rt.jar - javax.* Package Source Code

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