Usage of e.printStacktrace is discouraged

[szarnekow]

I'd rather use a log4j logger which will put its messages into the Eclipse console automagically instead of printing directly to System.err. Even worse, catching exceptions without handling them properly will lead to overly long debugging sessions as the error is silently ignored. Please rethrow exceptions as runtime exceptions if you cannot handle them properly.

[RvonMassow]

replaced printstacktrace by logger, as suggested. checked for caught but unhandled exceptions, i hope i didn't miss any.