question: @ Override public void run ( ) { while ( exitWhenFinished == false || trackers . size ( ) > 0 ) { try { Tracker tracker = ( Tracker ) q . remove ( ) ; trackers . remove ( tracker ) ; if ( ! tracker . delete ( ) ) { deleteFailures . add ( tracker . getPath ( ) ) ; } tracker . clear ( ) ; } catch ( InterruptedException e ) { continue ; } } }
target:  Run the reaper thread that will delete files as their associated marker objects are reclaimed by the garbage collector.