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/PortableInterceptor/IORInterceptor_3_0Operations.java

package org.omg.PortableInterceptor;


/**
* org/omg/PortableInterceptor/IORInterceptor_3_0Operations.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/PortableInterceptor/Interceptors.idl
* Saturday, October 6, 2018 9:30:42 AM PDT
*/

public interface IORInterceptor_3_0Operations  extends org.omg.PortableInterceptor.IORInterceptorOperations
{

  /** The components_established method is invoked on all registered 
     * IORInterceptor_3_0 instances after establish_components
     * has been invoked on all registered IORInterceptor instances.
     * The adapter_template is available in info during this call.
     * The current_factory may be get or set in info during this call.
     * <p>
     * Any exception thrown from this method is handled by the Object 
     * Adapter that called this interceptor.  In the case of the POA,
     * an exception results in a OBJ_ADAPTER exception with an OMG
     * standard minor code of 6.
     * @param info The IORInfo for the object adapter being created.
     */
  void components_established (org.omg.PortableInterceptor.IORInfo info);

  /** Called whenever the state of an adapter manager changes.
     * For the POA, that is the POAManager.  If the state change
     * is reported through <code>adapter_manager_state_changed</code>,
     * it is not reported through <code>adapter_state_changed</code>.
     * @param id the adapter manager id of the adapter manager that 
     * changed state
     * @param state the new state of the adapter manager
     */
  void adapter_manager_state_changed (int id, short state);

  /** Called whenever the state of an object adapter changes, and
     * the state change is not caused by an adapter manager.  Such
     * changes are reported to all registered <code>IORInterceptor_3_0</code> 
     * instances.
     * @param templates the sequence of <code>ObjectReferenceTemplate</code> instances
     *     on which this state change occurred.
     * @param state the new <code>AdapterState</code> shared by all of the templates.
     */
  void adapter_state_changed (org.omg.PortableInterceptor.ObjectReferenceTemplate[] templates, short state);
} // interface IORInterceptor_3_0Operations

⏎ org/omg/PortableInterceptor/IORInterceptor_3_0Operations.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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