Implement AB6, Aufgabe 1+2

src/MassiveLinkedList.java

@@ -98,7 +98,7 @@ public class MassiveLinkedList implements Iterable<Massive> {
             return null;
         }
         Massive m = last.body;
-        last = last.next;
+        last = last.prev;
         if (last != null) last.setNext(null);
         size--;
         return m;
@@ -194,7 +194,7 @@ public class MassiveLinkedList implements Iterable<Massive> {
         };
     }
 
-    private class Item {
+    private static class Item {
         private final Massive body;
         private Item prev;
         private Item next;