[OCAJP]泛型2

Given the following class declarations:

public abstract class Animal
public interface Hunter
public class Cat extends Animal implements Hunter
public class Tiger extends Cat

Which answer fails to compile?

ArrayList<Animal> myList = new ArrayList<>();
myList.add(new Tiger());

1 2	ArrayList<Animal> myList = new ArrayList<>(); myList.add(new Tiger());

ArrayList<Hunter> myList = new ArrayList<>();
myList.add(new Cat());

1 2	ArrayList<Hunter> myList = new ArrayList<>(); myList.add(new Cat());

ArrayList<Hunter> myList = new ArrayList<>();
myList.add(new Tiger());

1 2	ArrayList<Hunter> myList = new ArrayList<>(); myList.add(new Tiger());

ArrayList<Tiger> myList = new ArrayList<>();
myList.add(new Cat());

1 2	ArrayList<Tiger> myList = new ArrayList<>(); myList.add(new Cat());

ArrayList<Animal> myList = new ArrayList<>();
myList.add(new Cat());

1 2	ArrayList<Animal> myList = new ArrayList<>(); myList.add(new Cat());

選項A，Tiger是Animal(Tiger繼承Cat，Cat繼承Animal)，所以這沒有問題。

選項B，Cat是Hunter(Cat繼承Animal)，所以這沒有問題。

選項C，Tiger是Hunter(Tiger繼承Cat，Cat實作Hunter)，所以這沒有問題。

選項D，Cat不是Tiger，會編譯錯誤。

選項E，Cat不是Animal(Cat繼承Animal)，所以這沒有問題。

MagicLen