ThrowsAdvice can only soften to runtime exception?

[jbetancourt]

I'm getting:

java.lang.reflect.UndeclaredThrowableException
at $Proxy0.fileOperation(Unknown Source)

Just to remove a remote possibility that I'm not misinterpreting an error in my code; my understanding is that in a ThrowsAdvice's afterThrowing method, one can only change the exception to a RunTimeException class or subclass. Correct?

[Costin Leau]

Ofc, otherwise you have a checked exception which had to be declared catched at compilation time.

[Rod Johnson]

Yes, you can't use Spring AOP to change method signatures.

[jbetancourt]

Yes, you can't use Spring AOP to change method signatures.

Thanks, as I found out the hard way a while back, you can't do "dynamic casts" in Java.