src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java

@@ -2565,10 +2565,20 @@
     public DesktopPeer createDesktopPeer(Desktop target){
         return new XDesktopPeer();
     }
 
     @Override
+    public boolean isTaskbarSupported(){
+        return XTaskbarPeer.isTaskbarSupported();
+    }
+    
+    @Override
+    public TaskbarPeer createTaskbarPeer(Taskbar target){
+        return new XTaskbarPeer();
+    }
+
+    @Override
     public boolean areExtraMouseButtonsEnabled() throws HeadlessException {
         return areExtraMouseButtonsEnabled;
     }
 
     @Override