Way to specify multiple interfaces in Java

Question

I have two interfaces, HasClickHandlers and DoesFancyFeedback. Then I have some UI objects that implement both interfaces - for example, a B

Answer 1

I do not think that there is a better way to do what you want. I just wanted to suggest you to do the following. You can create method (let's call it foo) that accepts argument that requires 2 interfaces:

 void foo(T arg);

Please pay attention on one ampersand between 2 your interfaces.