Which exception is thrown in overidding method

Question

Hi ,
I have a doubt in doubt in overriding method. What type of exception is thrown in overidding method.

Answer 1

Hi all,
I have a doubt.. I read some where that an overriding
method can throw a different exception from the
orignal one. Does that exception has a restriction
that ..it shouldn't be more Generic than that of the
original?
Yes, this is what the jls in section 8.4.4 has to say about throws and overriding
A method that overrides or hides another method (�8.4.6), including methods that implement abstract methods defined in interfaces,
may not be declared to throw more checked exceptions than the overridden or hidden method.
More precisely, suppose that B is a class or interface, and A is a superclass or
superinterface of B, and a method declaration n in B overrides or hides a
method declaration m in A. If n has a throws clause that mentions any checked
exception types, then m must have a throws clause, and for every checked
exception type listed in the throws clause of n, that same exception class or one
of its superclasses must occur in the throws clause of m; otherwise, a compile-time error occursLets take an example
public class A
   public void meth() throws IOException
        //some code that throws IOException
class B extends A
   //this is ok bcos FNFException inherits from IOException
   public void meth() throws FileNotFoundException
      //code that throws FNFException
   /*  THIS WILL FAIL TO COMPILE
   public void meth() throws Exception
      //code that throws FNFException
I think the access modifier in the over riden method
can't be more restrictive than the original one.. For
example..The overriden method can change the access
modifier from default to protected..But not vice
versa..correct.
Cheers,
ram.