code: private static void populateLevels() {
          levelList = new LinkedList();
  
          levelList.add(Level.FATAL.toString());
          levelList.add(Level.ERROR.toString());
          levelList.add(Level.WARN.toString());
          levelList.add(Level.INFO.toString());
          levelList.add(Level.DEBUG.toString());
  		Level trace = Level.toLevel(5000, null);
  		if (trace != null) {
  			levelList.add(trace.toString());
  		}
  
          utilLoggingLevelList = new LinkedList();
  
          utilLoggingLevelList.add(UtilLoggingLevel.SEVERE.toString());
          utilLoggingLevelList.add(UtilLoggingLevel.WARNING.toString());
          utilLoggingLevelList.add(UtilLoggingLevel.INFO.toString());
          utilLoggingLevelList.add(UtilLoggingLevel.CONFIG.toString());
          utilLoggingLevelList.add(UtilLoggingLevel.FINE.toString());
          utilLoggingLevelList.add(UtilLoggingLevel.FINER.toString());
          utilLoggingLevelList.add(UtilLoggingLevel.FINEST.toString());
  
      }
docs: Populate list of levels.