diff -r 20a9b2bc9063 -r 89e3e6e28b69 src/java/de/uapcore/lightpit/Functions.java
--- a/src/java/de/uapcore/lightpit/Functions.java	Fri Dec 15 17:39:54 2017 +0100
+++ b/src/java/de/uapcore/lightpit/Functions.java	Sat Dec 16 20:19:28 2017 +0100
@@ -28,12 +28,52 @@
  */
 package de.uapcore.lightpit;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 /**
  * Contains common static functions.
  */
-public class Functions {
+public final class Functions {
+    
+    private static final Logger LOG = LoggerFactory.getLogger(Functions.class);
 
     public static String jspPath(String filename) {
         return Constants.JSP_PATH_PREFIX + filename;
     }
+    
+    public static String fullyQualifiedName(String base, String name) {
+        return base+"."+name;
+    }
+    
+    public static String fullyQualifiedName(Class clazz, String name) {
+        return fullyQualifiedName(clazz.getName(), name);
+    }
+    
+    /**
+     * Returns the module path of the given LightPIT Servlet module.
+     * 
+     * If you specify a malformed LightPIT servlet, which does not have a module
+     * annotation, the path to the <code>/error/404.html</code> page is returned.
+     * 
+     * @param clazz the servlet class
+     * @return the module path
+     */
+    public static String modulePathOf(Class<? extends AbstractLightPITServlet> clazz) {
+        LightPITModule moduleInfo = clazz.getAnnotation(LightPITModule.class);
+        if (moduleInfo == null) {
+            LOG.warn(
+                    "{} is a LightPIT Servlet but is missing the module annotation.",
+                    clazz.getName()
+            );
+            return "/error/404.html";
+        } else {
+            return moduleInfo.modulePath();
+        }
+    }
+    
+    /**
+     * This class is not instantiatable.
+     */
+    private Functions() {}
 }