Hello everyone!

I got that problem, which I'm trying to describe as short as possible (with the exception of this introduction).

I got an own class Map (Object: mappe)

1. class Map {
     ArrayList Objekte;
     Map() {
       this.Objekte=new ArrayList();
     }
    
     boolean isType(int i, Class c) {
       if (this.Objekte.get(i).getClass()==c) {
         return true;
       }
       return false;
     }
    
     Object getObjekt(int i) {
       return mappe.get(i);
     }
   }
   

and an own class Feld ().

1. class Feld {
2.  float anziehenX (float speedx) {
         return speedX;
      }
     float anziehenY (float speedy) {
         return speedy;
     }
3. }
   

 
When trying to run the following, I get the error: "The function anziehenX does not exist" and its the same for anziehenY.
Since, I think, I make sure, the Object got that function, I guess it may be some safety mechanism of the compiler? If it is, is there a way to override it?
If not, I would be thankful for any suggestions =)

1. Feld f = new Feld;
   class Feld = f.getClass();
   float speedy=0;
2. float speedx=0;
3. 
   if (mappe.isType(0,Feld)) {
         speedx=mappe.getObjekt(i).anziehenX(speedx);
         speedy=mappe.getObjekt(i).anziehenY(speedy);          
   }

Thanks for reading,
toohuu