title: Display elements in the arrayList using method from the superclass java
body: <p>I'm trying to print out elements from the List in the main method. However I have a problem, because Eclipse says that the method I've implemented in a superclass is not defined for my type. 
  There is the superclass, there are three other which extend this one and I've imported java.util.List and java.util.ArrayList; 
  The reason I need to implement method is because my mentor asked that, however I know just using for-loop will be enough in the main method.
  Superclass:</p>
  
  <pre><code>import java.util.ArrayList;
  import java.util.List;
  
  public class Figura {
  
      private  int x;
      private  int y;
      private  String name;
      private int index;
  
  
      public Figura (String name, int x, int y) {
          this.name = name;
          this.x = x;
          this.y = y;
      }
  
  
      public  int getX() {
          return x;
      }
      public void setX(int x) {
          this.x = x;
      }
      public int getY() {
          return y;
      }
      public void setY(int y) {
          this.y = y;
      }
      public String getName() {
          return name;
      }
      public void setName(String name) {
          this.name = name;
      }
  
  public void show(Figura p) {
  System.out.println(p.toString());
  }
   public void showElements (List &lt;Figura&gt; m) { 
      Figura p =  m.get(index);
      for (int i = 0; i &lt; m.size(); i++){
          System.out.println(m.get(i));
      }
  }
  }
  </code></pre>
  
  <p>I will not show here all other classes I've created (there classes are simple figures, which extend all the superclass). But the main problem is here:</p>
  
  <pre><code>import java.util.ArrayList;
  import java.util.List;
  public class zadanie2 {
  
      public static void main(String[] args) {
          // TODO Auto-generated method stub
  List &lt;Figura&gt; kolekcje = new ArrayList&lt;Figura&gt;(10);
  
  Punkt pr1 = new Punkt("Prostokat", 10,148,"Ciemne");
  kolekcje.add(0,new Prostokat(pr1,42)); 
  Punkt kolo1 = new Punkt("Kolo", 41,23,"Malinowe");
  kolekcje.add(1,new Kolo(kolo1, 126));
  Punkt pu31 = new Punkt("Punkt 3D", 45, 23,"Pomaranczowe");
  kolekcje.add(2, new punkt3D(pu31, 451));
  Punkt kw1 = new Punkt("Kwadrat", 215, 521,"Szary");
  kolekcje.add(3, new Kwadrat(kw1, 620));
  Punkt wk1 = new Punkt("Wektor", 52, 13,"Brazowy");
  kolekcje.add(4, new Wektor(wk1, 41,52));
  Punkt ec1 = new Punkt("Eklipsa", 52, 301, "Kremowy");
  kolekcje.add(5, new Eclipsa(ec1, 22));
  Punkt pr2 = new Punkt("Prostokat", 63,40,"Bialy");
  kolekcje.add(6, new Prostokat(pr2,310));
  Punkt kolo2 = new Punkt("Kolko",52,314,"Rozowe");
  kolekcje.add(7, new Kolo(kolo2, 52));
  Punkt pu32 = new Punkt("Punkcik 3D", 52,63,"Ciemno-brazowe");
  kolekcje.add(8, new punkt3D(pu32, 412));
  Punkt kw2 = new Punkt("Kwadracik", 52, 631,"Oliwkowy");
  kolekcje.add(9, new Kwadrat(kw2,541));
  Punkt wk2 = new Punkt("Wektor", 12, 71, "Czarne");
  kolekcje.add(10, new Wektor(wk2, 41, 23));
  
  int size = kolekcje.size();
  
  //for (int i = 0; i&lt; kolekcje.size(); i++) {
  //  System.out.println(kolekcje.get(i));
  //}
   kolekcje.showElements(kolekcje);
      }
  </code></pre>
  
  <p>What is commented (for loop), works just fine, however <code>showElements(List &lt;Figura&gt; m)</code> method doesn't work and Eclipse shows that this method is not defined to the type <code>List&lt;Figura&gt;</code>.<br>
  Also, it suggest to cast the method like this </p>
  
  <pre><code>((Figura) kolekcje).showElements(kolekcje);
  </code></pre>
  
  <p>But it doesnt work either and shows the error Exception in thread "main" java.lang.ClassCastException: java.util.ArrayList cannot be cast to zadaniedomoweZadanie1.Figura<br>
  Please help!</p>