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Custom Exception doubt

Kaushik Baral

Joined: Aug 08, 2009
Posts: 23
can i create a custom exception extending java.lang.Throwable? if yes then why we do it using Exception or RuntimeException. what will be the problem if we do it using Throwable always?

thanks a lot in advance
Campbell Ritchie

Joined: Oct 13, 2005
Posts: 38472
Because many methods only deal with Exceptions, you will have to introduce special handling for your Throwable subclass. It will count as "checked" of course.

Of course you can subclass Throwable, but that should only be done under the justification of
I only wanted to see what happens if . . .
I agree. Here's the link:
subject: Custom Exception doubt