diff --git a/src/main/java/ui/ftd/FaultTreeDiagramPanel.java b/src/main/java/ui/ftd/FaultTreeDiagramPanel.java
index c9e1393320ee028e6fa8c8c1436e76b467932578..76add2313cc41257b9efb0721f3ec8fe445e20a3 100644
--- a/src/main/java/ui/ftd/FaultTreeDiagramPanel.java
+++ b/src/main/java/ui/ftd/FaultTreeDiagramPanel.java
@@ -66,42 +66,53 @@ public class FaultTreeDiagramPanel extends TDiagramPanel implements TDPWithAttri
     public  FaultTreeDiagramPanel(MainGUI mgui, TToolBar _ttb) {
         super(mgui, _ttb);
     }
-
+    
+    @Override
     public boolean actionOnDoubleClick(TGComponent tgc) {
         return true;
     }
 
+    @Override
     public boolean actionOnAdd(TGComponent tgc) {
         return false;
     }
+    
+    @Override
     public boolean actionOnValueChanged(TGComponent tgc) {
         return false;
     }
-
+    
+    @Override
     public  boolean actionOnRemove(TGComponent tgc) {
         return false;
     }
-
+    
+    @Override
     public String getXMLHead() {
         return "<FaultTreeDiagramPanel name=\"" + name + "\"" + sizeParam() + zoomParam() + " >";
     }
-
+    
+    @Override
     public String getXMLTail() {
         return "</FaultTreeDiagramPanel>";
     }
-
+    
+    @Override
     public String getXMLSelectedHead() {
         return "<FaultTreeDiagramPanelCopy name=\"" + name + "\" xSel=\"" + xSel + "\" ySel=\"" + ySel + "\" widthSel=\"" + widthSel + "\" heightSel=\"" + heightSel + "\" >";
     }
-
+    
+    @Override
     public String getXMLSelectedTail() {
         return "</FaultTreeDiagramPanelCopy>";
     }
-
+    
+    @Override
     public String getXMLCloneHead() {
         return "<FaultTreeDiagramPanelCopy name=\"" + name + "\" xSel=\"" + 0 + "\" ySel=\"" + 0 + "\" widthSel=\"" + 0 + "\" heightSel=\"" + 0 + "\" >";
     }
-
+    
+    @Override
     public String getXMLCloneTail() {
         return "</FaultTreeDiagramPanelCopy>";
     }
@@ -130,7 +141,8 @@ public class FaultTreeDiagramPanel extends TDiagramPanel implements TDPWithAttri
         return list;
 
     }
-
+    
+    @Override
     public boolean hasAutoConnect() {
         return false;
     }
diff --git a/src/main/java/ui/ftd/FaultTreeDiagramToolbar.java b/src/main/java/ui/ftd/FaultTreeDiagramToolbar.java
index 40eaa5118a5b7923ea411676fc802166c20d2d55..ab71a6f9c241dab3e9146bf2347cf51d29d8e054 100644
--- a/src/main/java/ui/ftd/FaultTreeDiagramToolbar.java
+++ b/src/main/java/ui/ftd/FaultTreeDiagramToolbar.java
@@ -63,7 +63,8 @@ public class FaultTreeDiagramToolbar extends TToolBar {
         super(_mgui);
 
     }
-
+    
+    @Override
     protected void setActive(boolean b) {
         mgui.actions[TGUIAction.ACT_ZOOM_MORE].setEnabled(b);
         mgui.actions[TGUIAction.ACT_ZOOM_LESS].setEnabled(b);
@@ -91,7 +92,8 @@ public class FaultTreeDiagramToolbar extends TToolBar {
         mgui.actions[TGUIAction.ACT_MODEL_CHECKING].setEnabled(b);
 
     }
-
+    
+    @Override
     protected void setButtons() {
         JButton button;