Resolve #242

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

@@ -303,6 +303,13 @@ public abstract class AbstractPluginManager implements PluginManager {
             return false;
         }
 
+        try {
+            pluginWrapper.getPlugin().delete();
+        } catch (PluginException e) {
+            log.error(e.getMessage(), e);
+            return false;
+        }
+
         Path pluginPath = pluginWrapper.getPluginPath();
 
         return pluginRepository.deletePluginPath(pluginPath);

pf4j/src/main/java/org/pf4j/Plugin.java

@@ -57,15 +57,24 @@ public class Plugin {
     }
 
     /**
-     * Start method is called by the application when the plugin is loaded.
+     * This method is called by the application when the plugin is started.
+     * See {@link PluginManager#startPlugin(String)}.
      */
     public void start() throws PluginException {
     }
 
     /**
-     * Stop method is called by the application when the plugin is unloaded.
+     * This method is called by the application when the plugin is stopped.
+     * See {@link PluginManager#stopPlugin(String)}.
      */
     public void stop() throws PluginException {
     }
 
+    /**
+     * This method is called by the application when the plugin is deleted.
+     * See {@link PluginManager#deletePlugin(String)}.
+     */
+    public void delete() throws PluginException {
+    }
+
 }