code: private void activateModules(URLClassLoader loader) {
  		for (int i = 0; i != modules.size(); ++i) {
  			Descriptor module = modules.get(i);
  			try {
  				Class c = loader.loadClass(module.getActivator());
  				Module.Activator self = (Module.Activator) c.newInstance();
  				Module instance = self.start(context);
  				instances.put(c, instance);
  				logger.logTimedMessage("Activated module " + module.getId() + " (v" + module.getVersion() + ")", 0, 0);
  			} catch (Exception e) {
  				e.printStackTrace();
  			}
  		}
  	}
docs: Activate all modules in the order of occurrence in the given list. It is
  assumed that all dependencies are already resolved prior to this and all
  modules are topologically sorted.