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/PortableActivationIDL/_LocatorImplBase.java

package com.sun.corba.se.PortableActivationIDL;


/**
* com/sun/corba/se/PortableActivationIDL/_LocatorImplBase.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/com/sun/corba/se/PortableActivationIDL/activation.idl
* Saturday, October 6, 2018 9:30:40 AM PDT
*/

public abstract class _LocatorImplBase extends org.omg.CORBA.portable.ObjectImpl
                implements com.sun.corba.se.PortableActivationIDL.Locator, org.omg.CORBA.portable.InvokeHandler
{

  // Constructors
  public _LocatorImplBase ()
  {
  }

  private static java.util.Hashtable _methods = new java.util.Hashtable ();
  static
  {
    _methods.put ("locateServer", new java.lang.Integer (0));
    _methods.put ("locateServerForORB", new java.lang.Integer (1));
    _methods.put ("getEndpoint", new java.lang.Integer (2));
    _methods.put ("getServerPortForType", new java.lang.Integer (3));
  }

  public org.omg.CORBA.portable.OutputStream _invoke (String $method,
                                org.omg.CORBA.portable.InputStream in,
                                org.omg.CORBA.portable.ResponseHandler $rh)
  {
    org.omg.CORBA.portable.OutputStream out = null;
    java.lang.Integer __method = (java.lang.Integer)_methods.get ($method);
    if (__method == null)
      throw new org.omg.CORBA.BAD_OPERATION (0, org.omg.CORBA.CompletionStatus.COMPLETED_MAYBE);

    switch (__method.intValue ())
    {

  /** locate server - returns the port with a specific type for all registered
	* ORBs of an active server.
	* Starts the server if it is not already running.
	*/
       case 0:  // PortableActivationIDL/Locator/locateServer
       {
         try {
           String serverId = org.omg.PortableInterceptor.ServerIdHelper.read (in);
           String endPoint = in.read_string ();
           com.sun.corba.se.PortableActivationIDL.LocatorPackage.ServerLocationPerType $result = null;
           $result = this.locateServer (serverId, endPoint);
           out = $rh.createReply();
           com.sun.corba.se.PortableActivationIDL.LocatorPackage.ServerLocationPerTypeHelper.write (out, $result);
         } catch (com.sun.corba.se.PortableActivationIDL.NoSuchEndPoint $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.NoSuchEndPointHelper.write (out, $ex);
         } catch (com.sun.corba.se.PortableActivationIDL.ServerNotRegistered $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.ServerNotRegisteredHelper.write (out, $ex);
         } catch (com.sun.corba.se.PortableActivationIDL.ServerHeldDown $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.ServerHeldDownHelper.write (out, $ex);
         }
         break;
       }


  /** locate server - returns all ports registered with a specified ORB for
	* an active server
	* Starts the server if it is not already running.
	*/
       case 1:  // PortableActivationIDL/Locator/locateServerForORB
       {
         try {
           String serverId = org.omg.PortableInterceptor.ServerIdHelper.read (in);
           String orbId = org.omg.PortableInterceptor.ORBIdHelper.read (in);
           com.sun.corba.se.PortableActivationIDL.LocatorPackage.ServerLocationPerORB $result = null;
           $result = this.locateServerForORB (serverId, orbId);
           out = $rh.createReply();
           com.sun.corba.se.PortableActivationIDL.LocatorPackage.ServerLocationPerORBHelper.write (out, $result);
         } catch (com.sun.corba.se.PortableActivationIDL.InvalidORBid $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.InvalidORBidHelper.write (out, $ex);
         } catch (com.sun.corba.se.PortableActivationIDL.ServerNotRegistered $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.ServerNotRegisteredHelper.write (out, $ex);
         } catch (com.sun.corba.se.PortableActivationIDL.ServerHeldDown $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.ServerHeldDownHelper.write (out, $ex);
         }
         break;
       }


  /** get the port for the endpoint of the locator
	*/
       case 2:  // PortableActivationIDL/Locator/getEndpoint
       {
         try {
           String endPointType = in.read_string ();
           int $result = (int)0;
           $result = this.getEndpoint (endPointType);
           out = $rh.createReply();
           out.write_long ($result);
         } catch (com.sun.corba.se.PortableActivationIDL.NoSuchEndPoint $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.NoSuchEndPointHelper.write (out, $ex);
         }
         break;
       }


  /** Useful from external BadServerIdHandlers which need
	* to pick a particular port type.
	*/
       case 3:  // PortableActivationIDL/Locator/getServerPortForType
       {
         try {
           com.sun.corba.se.PortableActivationIDL.LocatorPackage.ServerLocationPerORB location = com.sun.corba.se.PortableActivationIDL.LocatorPackage.ServerLocationPerORBHelper.read (in);
           String endPointType = in.read_string ();
           int $result = (int)0;
           $result = this.getServerPortForType (location, endPointType);
           out = $rh.createReply();
           out.write_long ($result);
         } catch (com.sun.corba.se.PortableActivationIDL.NoSuchEndPoint $ex) {
           out = $rh.createExceptionReply ();
           com.sun.corba.se.PortableActivationIDL.NoSuchEndPointHelper.write (out, $ex);
         }
         break;
       }

       default:
         throw new org.omg.CORBA.BAD_OPERATION (0, org.omg.CORBA.CompletionStatus.COMPLETED_MAYBE);
    }

    return out;
  } // _invoke

  // Type-specific CORBA::Object operations
  private static String[] __ids = {
    "IDL:PortableActivationIDL/Locator:1.0"};

  public String[] _ids ()
  {
    return (String[])__ids.clone ();
  }


} // class _LocatorImplBase

⏎ com/sun/corba/se/PortableActivationIDL/_LocatorImplBase.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
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