Catching Exception in RMI

Question

Hello,
I have this problem. I have this method in my RMI IF
public Object performSomething() throws RemoteException
try
doSomething();
catch(Exception e)
RemoteException eEx = new RemoteException(e.getMessage(), e.getCause());
eEx.setStackTrace(e.getStackTrace());
throw eEx;
but when i logged the Exception that i caught (as well as the stack trace), i got null for the exception message and null also for each message in the stackTraceElement. Does anyone has an idea why this has happened.
And btw, the exception that i excepted was an sql exception.
Thanks a lot =)

Answer 1

That's because you're constructing your own, and destroying all the information in the original exception. Just cast it to RemoteException, don't construct a new one, or better still just catch the RemoteException (and the SQLException directly:
catch (RemoteException exc)
catch (SQLException exc)
}It is rarely correct to catch Exception except in toy code or at the bottom of Runnable.run() methods.
Indeed, it is also rarely best to log and rethrow. This is a well-known antipattern. The catcher that has to finally catch the exception and do something about it should log it too.