现有: class Parser extends Utilis { public static void main (String [] args) { try { System. out.print (new Parser ( ) .getlnt ("42")} ; } catch (NumberFormatException n) { System.out .println ( "NFExc" ) ; } } int getlnt (String arg) throws NumberFormatException{ return Integer.parselnt (arg) ; } class Utils { int getlnt (String arg) { return 42; } } 结果为 :()