public class LListSent<T> implements Iterable<T>{
  //...
  public T get(int pos) {
      //...
  }
  //...
  private class LListSentIterator {
      private final LListSent list;
      private int currPos;
      private LListSentIterator(LListSent list) {
          this.list = list;
          currPos = 0;
      }
      //...
      @Override
      public T next() {
          return list.get(currPos++); //exception in this line
      }
  }
}

incompatible Type: Object cannot be converted to T
  where T is a type-variable:
    T extends Object declared in class LListSent