How to classify an exception as checked or unchecked?

[Ajay Xavier]

Hi,

Thanks for every one who gave their veiws on my last query.(Throwing a null value from a method)

How to classify an exception as a checked one or unchecked one? To be more precise how do i decide the superclass (Exception or RuntimeException) of my custom exception?

Thanks,
Ajay.

[Chetan Raju]

All exception classes that extend the RuntimeException class are said to be unchecked exceptions. This means the compiler doesn't check the RuntimeExceptions. So if you want to create a checked exception then extend your class with Exception class.

Also, the Error class and subclasses of Error are also unchecked by compiler.