Here i attach the code of the program & error while compiling

Source.java ( file from Jan Newmarch Online Tutorial )
-----------
/**
 * Source.java
 *
 *
 * Created: Fri Jun 27 08:35:55 2003
 *
 * @author <a href="mailto: [email protected]">jan newmarch</a>
 * @version 1.0
 */

package audio.common;

import java.rmi.RemoteException;
import net.jini.core.event.EventRegistration;
import net.jini.core.event.RemoteEventListener;
import java.rmi.MarshalledObject;

/**
 * A source for A/V data
 */

public interface Source extends java.rmi.Remote {

    int STOP = 1;

    void play() throws
                RemoteException,
         AlreadyPlayingException;
    void stop() throws
                RemoteException,
                NotPlayingException;
    void addSink(Sink sink) throws
                RemoteException,
                TooManySinksException,
                IncompatableSinkException;
    void removeSink(Sink sink) throws
                RemoteException,
                NoSuchSinkException;
    EventRegistration addSourceListener(RemoteEventListener listener,
     MarshalledObject handback) throws
         RemoteException;
}// Source

I saved this file in /opt/dev/streaming/src/audio/common/ location


Compiling
----------

[root@system3 src]# javac -classpath
/opt/jini2_1/lib/jini-core.jar:/opt/jini2_1/lib/sun-util.jar:
/opt/jini2_1/lib/jsk-platform.jar:/opt/jini2_1/lib/jsk-lib.jar:/opt/dev/streaming/src/
audio/common/Source.java -d /opt/dev/streaming/src/audio/common/

audio/common/Source.java:22: cannot find symbol
symbol  : class AlreadyPlayingException
location: interface audio.common.Source
                AlreadyPlayingException;
                ^
audio/common/Source.java:25: cannot find symbol
symbol  : class NotPlayingException
location: interface audio.common.Source
                NotPlayingException;
                ^
audio/common/Source.java:28: cannot find symbol
symbol  : class TooManySinksException
location: interface audio.common.Source
                TooManySinksException,
                ^
audio/common/Source.java:29: cannot find symbol
symbol  : class IncompatableSinkException
location: interface audio.common.Source
                IncompatableSinkException;
                ^
audio/common/Source.java:32: cannot find symbol
symbol  : class NoSuchSinkException
location: interface audio.common.Source
                NoSuchSinkException;
                ^
/opt/dev/streaming/src/audio/common/Sink.java:23: cannot find symbol
symbol  : class AlreadyRecordingException
location: interface audio.common.Sink
                AlreadyRecordingException;
                ^
/opt/dev/streaming/src/audio/common/Sink.java:26: cannot find symbol
symbol  : class NotRecordingException
location: interface audio.common.Sink
                NotRecordingException;
                ^
/opt/dev/streaming/src/audio/common/Sink.java:29: cannot find symbol
symbol  : class TooManySourcesException
location: interface audio.common.Sink
                TooManySourcesException,
                ^
/opt/dev/streaming/src/audio/common/Sink.java:30: cannot find symbol
symbol  : class IncompatableSourceException
location: interface audio.common.Sink
                IncompatableSourceException;
                ^
/opt/dev/streaming/src/audio/common/Sink.java:33: cannot find symbol
symbol  : class NoSuchSourceException
location: interface audio.common.Sink
                NoSuchSourceException;
                ^
/opt/dev/streaming/src/audio/common/Sink.java:39: cannot find symbol
symbol  : class NoSuchListenerException
location: interface audio.common.Sink
                NoSuchListenerException;
                ^
11 errors
[root@system3 src]#

I want help, please tell me how can i solve these errors. I couldnt find,
what i am doing wrong, but I think errors are  due to " net.jini.core.event.* ".

--------------------------------------------------------------------------
Getting Started:     http://www.jini.org/wiki/Category:Getting_Started
Community Web Site:  http://jini.org
jini-users Archive:  http://archives.java.sun.com/archives/jini-users.html
Unsubscribing:       email "signoff JINI-USERS"  to [email protected]