Code for log4j that mentioned is not working

what is the error?

I dont see debug method getting displayed

APPLICATION_LOGS.debug("hello");
APPLICATION_LOGS.debug("We are wrinting in to a log file");
APPLICATION_LOGS.debug("starting the test case xyz test");
above three steps are getting failed ,After APPLICATION_LOGS i dont see any debug methd populated when i tried to copy the code its throwing error.

[quote:1g1ndcrh]i dont see any debug methd populated when i tried to copy the code its throwing error.

[/quote:1g1ndcrh]

but what is the error?