while( true )
{ DataBlock data = new DataBlock( rand.nextInt( limit+1 ),
rand.nextInt( limit+1 ),
rand.nextInt( limit+1 ),
rand.nextInt( limit+1 ) );
setChanged();
notifyObservers( data );
try
{ me.sleep( 100 ); // delay to allow AWT thread to update screen
}
catch( InterruptedException e )
{}
}