redirecting standard output/errors to a log4j file

[r3krishnan]

This idea is that I want to have output generated by the method printStackTrace() re-directed to a log4j file as an ERROR. Is there a way to do this?
In general how do you allow the stmt System.err.println() or System.out.println() to be outputed to the log4j file
rather than to the Console?

Thanks,
Raj