title: Want to make "System.out.println()" to print message to log4j
body: <p>our project uses System.out.println() or System.err.println() to output debugging message. Now we want to use log4j to direct these output to log files not just console. To avoid impact or risk, we don't want to do replace all "System.out.println()" with "logger.debug" but just want to maybe write several code to make these output redirect to log4j log files that is no code change in each class still using System.out.println() (we know this is bad practice but we don't want to do global search and replace currently). Is it possible? Thanks.</p>