configure log4j to log to custom file at runtime

Question

Can anyone please guide me as to how I can configure log4j to log to a specific file that I specify at run-time.The name and path of the log file are generated at run-time a

Answer 1

Working and same has been tested

// setting up a FileAppender dynamically...
SimpleLayout layout = new SimpleLayout(); 
RollingFileAppender appender = new RollingFileAppender(layout,"file-name_with_location",true);
                    appender.setMaxFileSize("20MB");
                    logger.addAppender(appender);