die exception ist weg

src/ui/view/GUI.java

@@ -195,10 +195,14 @@ public class GUI implements CategoryListener {
 		        });*/
 		tree.addMouseListener(new MouseAdapter(){
             public void mouseReleased(MouseEvent e){
-                	HolonObject h = new HolonObject("House");
-                	h.setPos((int)canvas.getMousePosition().getX(),(int)canvas.getMousePosition().getY());
-                	canvas.choords.add(h);
-                	canvas.repaint();
+                	try {
+                		HolonObject h = new HolonObject("House");
+                		h.setPos((int)canvas.getMousePosition().getX(),(int)canvas.getMousePosition().getY());
+                		canvas.choords.add(h);
+                		canvas.repaint();
+					} catch (Exception e2) {
+						
+					}
 	            }
 	        });