question: @ Override @ SuppressForbidden ( reason = "System#out" ) public void activateOptions ( ) { if ( follow ) { if ( target . equals ( SYSTEM_ERR ) ) { setWriter ( createWriter ( new SystemErrStream ( ) ) ) ; } else { setWriter ( createWriter ( new SystemOutStream ( ) ) ) ; } } else { if ( target . equals ( SYSTEM_ERR ) ) { setWriter ( createWriter ( System . err ) ) ; } else { setWriter ( createWriter ( System . out ) ) ; } } super . activateOptions ( ) ; }
target:  Prepares the appender for use.