Based on some examples I cobbled together the following code to programmatically configure logback to write its output to a file (I don't like having config files around), but the output still goes to stdout in addition to the file. Can anyone give me a clue how I can only have the output go to the specific file and not stdout? Thanks Steve LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory(); FileAppender<ILoggingEvent> fileAppender = new FileAppender<ILoggingEvent>(); fileAppender.setContext(loggerContext); fileAppender.setFile(ConcurrencyExample.class.getSimpleName() + ".log"); PatternLayout pl = new PatternLayout(); pl.setPattern("%d %5p %t [%c:%L] %m%n)"); pl.setContext(loggerContext); pl.start(); fileAppender.setLayout(pl); fileAppender.start(); // attach the rolling file appender to the logger of your choice Logger logbackLogger = loggerContext.getLogger(ConcurrencyExample.class); logbackLogger.addAppender(fileAppender); // OPTIONAL: print logback internal status messages StatusPrinter.print(loggerContext); // log something logbackLogger.info("hello");