Proper Generic Syntax for a Nested Collection of Objects on a method Parameter

[Cameron Wallace McKenzie]

I have a method defined in an Interface that returns a Question:

public Question saveQuestion(Question question);

The pseudo implementation uses generics to indicate the AsyncCallbak will return a Question:

public void saveQuestion(Question question, AsyncCallback<Question> callback);

I have another method that returns a List of Question objects:

public List<Question> getAllQuestions(); 

How do I indicate that the AsynchCallback is returning a List of Questions, List<Question>.

The following will fail, because I have only genericized the List, not the List<Question>.

public void getAllQuestions(AsyncCallback<List> callback);

Essentially, I have a container containing a container containing a container. So, I need to genericize 'two deep.'

I don't want to just use <List>, but I want to indicate that it's a List<Question>. What's the syntax?

[Cameron Wallace McKenzie]

Sitting here, talking it out, I decided to try something:

 public void getAllQuestions(AsyncCallback<List><Question>>  callback);    

Man, that syntax looks awful. No possible way that should work, right?

Go figure?

-Cameron McKenzie

[Paul Clapham]

You mean this?

public void getAllQuestions(AsyncCallback<List<Question>>  callback); 

[Cameron Wallace McKenzie]

Thanks Paul. I knew I'd have an answer before I had time to get a pop from the fridge.

Back to work...