What does checled exception mean?

[Timothy Sam]

I'm playing the Java Rule Round Up Game

[Dale DeMott]

A checked exection is any exception that is expected to be handled by the developer. If your compiler complains that an exception isn't handled in your code, then the exception you aren't handling is a checked exception. The compiler is 'checking' to see if you handled it in your code. Runtime exceptions are not checked. The compiler doesn't EXPECT you to handle them however you can catch them if you want.

[Hemant Agarwal]

Is it possible to create RunTime Exceptions in my code?

[Michael Duffy]

Originally posted by Hemant Agarwal:
Is it possible to create RunTime Exceptions in my code?

of course, just have your exception extend java.lang.RuntimeException

[Mike Noel]

Or you can throw a RuntimeException with:

...
  throw(new RuntimeException());
...

It's probably more useful to throw one of the RuntimeException subclasses like the UnsupportedOperationException.

_M_