doubt in Exception

[Divya Gehlot]

Hi,
I am really confused with checked and unchecked exceptions every time I read and get confused with that. Is there any simple way or trick to check checked and unchecked exceptions from exam point of view(SCJP1.5).
Thanks in Advance.

[Sundaram Karthick]

Unchecked exceptions are subclasses of RuntimeException, and are usually implemented using IllegalArgumentException, NullPointerException, or IllegalStateException.
Checked are subclasses of Exception.
It is somewhat confusing, but note as well that RuntimeException (unchecked) is itself a subclass of Exception (checked).

[Divya Gehlot]

hi,
I am confused in that. Sometimes in questions they will ask whether it is Runtime Exception or ......
So so how to get overcome from all these . please suggest me some trick and tips.

[Nik Arora]

Hi Divya,
Refer thisLink and if you have doubts post it here.


Regards
Nik
Scjp 1.5

[Chandra Bhatt]

Simple rules:

1- Checked exceptions: Compiler doesn't excuse you. You must handle
or declare the exception if your code is supposed to throw any checked
exception as java.io.FileNotFoundException, java.io.IOException etc.
All checked exceptions extend from java.lang.Exception

Unchecked Exception: Where compiler doesn't bother regarding handle
or declare rule. All unchecked exception classes extend from
java.lang.RuntimeException


Isn't it simple?

Note: java.lang.RuntimeException also extend java.lang.Exception

Thanks,

[chintan ramavat]

I think recalling the Exception Tree from

Throwable
||
1 Error 2 Exception
- AssertionError ||
Runtime Compiletime
(unchecked) (checked)
| |
no need to need to play round
play around