title: How to change slf4j logging level
body: <p>I'm using the org.slf4j.Logger in a Java EJB-Project running on a glassfish 3.1.2 server. </p>
  
  <pre><code>import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class main {
  
  private static final Logger LOGGER = LoggerFactory.getLogger(main.class);
  
  public static void main(String[] args) {
    LOGGER.info("--- show this everytime");
    if(LOGGER.isDebugEnabled()) {
          LOGGER.debug("--- show this only if debug is enable");
    }
    LOGGER.info("--- show this everytime");
  }
  </code></pre>
  
  <p>So my Problem is, I don't know how to turn on/off the different log level (info, debug, error, trace, warn). I read about create a config-file or xml-file, but I don't know where to put these files in a EJB-Project. 
  And is there a way to configure it like this?</p>
  
  <pre><code>LOGGER.setLevel("info");
  </code></pre>