Formatting

demo/plugins/pom.xml

@@ -17,6 +17,8 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.7</java.version>
+
+        <!-- Override below properties in each plugin's pom.xml -->
         <plugin.id/>
         <plugin.class/>
         <plugin.version/>

pf4j/src/main/java/org/pf4j/AbstractPluginManager.java

@@ -525,27 +525,29 @@ public abstract class AbstractPluginManager implements PluginManager {
         return pluginClassLoaders.get(pluginId);
     }
 
+    @SuppressWarnings("unchecked")
     @Override
     public <T> List<Class<T>> getExtensionClasses(Class<T> type) {
         List<ExtensionWrapper<T>> extensionsWrapper = extensionFinder.find(type);
         List<Class<T>> extensionClasses = new ArrayList<>(extensionsWrapper.size());
         for (ExtensionWrapper<T> extensionWrapper : extensionsWrapper) {
-            @SuppressWarnings("unchecked")
             Class<T> c = (Class<T>) extensionWrapper.getDescriptor().extensionClass;
             extensionClasses.add(c);
         }
+
         return extensionClasses;
     }
 
+    @SuppressWarnings("unchecked")
     @Override
     public <T> List<Class<T>> getExtensionClasses(Class<T> type, String pluginId) {
         List<ExtensionWrapper<T>> extensionsWrapper = extensionFinder.find(type, pluginId);
         List<Class<T>> extensionClasses = new ArrayList<>(extensionsWrapper.size());
         for (ExtensionWrapper<T> extensionWrapper : extensionsWrapper) {
-            @SuppressWarnings("unchecked")
             Class<T> c = (Class<T>) extensionWrapper.getDescriptor().extensionClass;
             extensionClasses.add(c);
         }
+
         return extensionClasses;
     }