@Override public boolean execute(final String[] params,final String remainder){
  j2DClient client=j2DClient.get();
  if (client != null) {
    client.requestQuit();
  }
 else {
    System.exit(0);
  }
  return true;
}

@ Override public boolean execute ( final String [ ] params , final String remainder ) { j2DClient client = j2DClient . get ( ) ; if ( client != null ) { client . requestQuit ( ) ; } else { System . exit ( 0 ) ; } return true ; }
execute a chat command .
