man kann wieder malen

src/ui/view/GUI.java

@@ -215,7 +215,7 @@ public class GUI implements CategoryListener {
 		            }
 		        });*/
 		tree.addMouseListener(new MouseAdapter(){
-            public void mouseReleased(MouseEvent e){
+            public void mouseClicked(MouseEvent e){
                 	Pair<Integer,Integer> xy = new Pair<Integer, Integer>((int)canvas.getMousePosition().getX(),(int)canvas.getMousePosition().getY());
                 	canvas.choords.add(xy);
                 	canvas.repaint();

src/ui/view/MyCanvas.java

@@ -68,13 +68,12 @@ class MyCanvas extends JPanel implements MouseListener
 
 	@Override
 	public void mouseReleased(MouseEvent e) {
-		/*
 		x = e.getX();
         y = e.getY();
 
-        Graphics g = img.getGraphics();
+        Pair<Integer,Integer> xy = new Pair<Integer, Integer>(x,y);
+    	choords.add(xy);
         System.out.println("Draw!");
 		repaint();
-		*/
 	}
 }