*How do you create a siftingappender with a fileappender manually ?* *Here my code :* LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory(); PatternLayoutEncoder encoder = new PatternLayoutEncoder(); encoder.setContext(loggerContext); encoder.setPattern("<%d(yyyy-MM-dd HH:mm:ss=> | %.-1level | %msg %n"); encoder.start(); FileAppender<ILoggingEvent> fAppender = new FileAppender<ILoggingEvent>(); fAppender.setContext(loggerContext); fAppender.setName(application + "_" + user); fAppender.setFile(logUser); fAppender.setAppend(true); fAppender.setEncoder(encoder); fAppender.start(); MDCBasedDiscriminator discriminator = new MDCBasedDiscriminator(); discriminator.setKey("userid"); discriminator.setDefaultValue("unknown"); discriminator.start(); LevelFilter lFilter = new LevelFilter(); lFilter.setLevel(Level.INFO); lFilter.start(); // HOW TO ATTACH fAppender on sAppender ???? SiftingAppender sAppender = new SiftingAppender(); sAppender.setContext(loggerContext); sAppender.setName(application + "_" + user + "_SIFTING"); sAppender.addFilter(lFilter); sAppender.setDiscriminator(discriminator); sAppender.start(); Logger logger = loggerContext.getLogger("test.mypackage"); logger.setAdditive(false); logger.setLevel(Level.ALL); logger.addAppender(sAppender); Thank you….