question: public static Collection < Handler > addJavaNoOpLogger ( ) { Collection < Handler > savedHnds = new ArrayList < > ( ) ; Logger log = Logger . getLogger ( "" ) ; for ( Handler h : log . getHandlers ( ) ) { log . removeHandler ( h ) ; savedHnds . add ( h ) ; } ConsoleHandler hnd = new ConsoleHandler ( ) ; hnd . setLevel ( Level . OFF ) ; log . addHandler ( hnd ) ; return savedHnds ; }
target:  Adds no-op console handler for root java logger.