what happens when an exception raise in Final block ?

That exception propagates out and up, and will (can) be handled at a higher level. Your finally block will not be completed beyond the point where the exception is thrown. If the finally block was executing during the handling of an earlier exception then that first exception is lost.

If exception occurs in finally block. It will be raised, program will terminate and will not execute further.

it will immediatly comes into catch block

Statement not executed in final block

This exception will be handled at higher level and execution will not be proceeded in final block