src/FormAirFighter.java

@@ -36,7 +36,7 @@ public class FormAirFighter {
         canv.repaint();
     }
     public void ChangeAirplane(DrawningAirplane newAirplane){
-        newAirplane.SetPosition(0,0);
+        newAirplane.SetPosition(0,70);
         DrawningAirplane = newAirplane;
         canv.DrawningAirplane = DrawningAirplane;
 

src/FormAirFighterCollection.java

@@ -107,8 +107,8 @@ public class FormAirFighterCollection {
                 if(_trashCollection.GetSize() == 0)
                     return;
                 FormAirFighter form = new FormAirFighter();
-                form.ChangeAirplane(_trashCollection.GetTop());
-                _trashCollection.Pop();
+                form.ChangeAirplane(_trashCollection.Pop());
+
             }
         });
         addButton.addActionListener(new ActionListener() {

src/Generics/AirplaneTrashCollection.java

@@ -20,13 +20,7 @@ public class AirplaneTrashCollection <T extends DrawningAirplane> {
         return _queue.size();
     }
 
-    public void Pop(){
-        if(_queue.size() ==0)
-            return;
-        _queue.remove();
-    }
-
-    public T GetTop(){
-        return _queue.peek();
+    public T Pop(){
+        return _queue.remove();
     }
 }