code: protected Logic instantiateLogic (String path, String lclass) {
          try {
              Class<?> pcl = Class.forName(lclass);
              return (Logic)pcl.newInstance();
          } catch (ClassNotFoundException cnfe) {
              // nothing interesting to report
          } catch (Throwable t) {
              log.warning("Unable to instantiate logic for application", "path", path,
                          "lclass", lclass, t);
          }
          return null;
      }
docs: Instantiates a logic instance with the supplied class name. May return null if no such class
  exists.