What does a tilde in angle brackets mean when creating a Java generic class?

Question

I was reading through some JMockit examples and found this code:

final List actualItems = new ArrayList<~>();

What d

Answer 1

If there wasn't a tilde, I'd say, the code was already Java 7. Java 7 allows the diamond operator so this is/will be legal Java code:

Map> map = new HashMap<>();

(but - no tilde with this syntax)