File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Mock Exam Errata and the fly likes Exception Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Certification » Mock Exam Errata
Bookmark "Exception" Watch "Exception" New topic
Author

Exception

Mahendra Kamble
Greenhorn

Joined: Mar 13, 2001
Posts: 4
Hello Friends
I wanted to the rules of throwing Exceptions when yoy override methods
and why so.


Mahendra Kamble<BR>Software Engineer
Sarang Gurao
Greenhorn

Joined: Mar 14, 2001
Posts: 13
Hello Friend,
Hope i can help u in this.
Overridden is done to override the method of the base class and overridden with exception have certain rule.
1. if the base class method has thrown any exception the overridden method can throws that exception or subclass of that exception. this rule apply to only checked exception and not to unchecked exception.
2. If the base class method had throws more than one exception like class xyz throws A,B,C then overridden method can throws anyone of these set of exception in subclass.
1. A
2. B
3. C
4. A,B
5. B,C
6. A,C
7. it can neither throw any exception.
i hope i am right and ur doubt is also clear upto certain limit.
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
 
subject: Exception