Setting log4j log level programmatically

private static void setupLog4j() {
        System.out.println("setupLog4j");
        BasicConfigurator.resetConfiguration();
        // Start clean.
        Logger.getRootLogger().removeAllAppenders();
        // Create appender
        ConsoleAppender console = new ConsoleAppender();
        // Configure the appender
        String PATTERN = "%d --[ %p ] %l: %m%n";
        console.setLayout(new PatternLayout(PATTERN));
        console.activateOptions();
        console.setName("stdout");
        Logger.getRootLogger().setLevel(Level.DEBUG);
        BasicConfigurator.configure(console);
        LOG = Logger.getLogger(MinerTest.class);
}