For a project at university I plan to build an annotation based tool to visualize/play around with data structures.

Here's my idea:

Students which want to try out their self-written data structures need to:

• mark the type of their data structures using some sort of marker annotation e.g.

  @List public class MyList { ... }

  so that I know how to represent the data structure

• need to provide an iterator so that I can retrieve the elements in the right order

• need to annotate methods for insertion and removal, e.g.

  @add public boolean insert(E e) { ... }

  so that I can "bind" that method to some button.

Do similar applications exist? I googled a little bit around but didn't find anything like that.