Where do System.out and System.err go in Tomcat?
Suresh Payankannur By default, they will go to the console where the tomcat is started. You have to modify the startup scripts to redirect them to appropriate files. See Tomcat Mailing List for a discussion on how to redirect the System.out and System.err.
On the other hand, if you are running Tomcat as an NT Service, you can modify the conf/wrapper.properties file and set wrapper.stdout and wrapper.stderr properties to point to your log files.