COMP 310 Spring 2010	Lec33:  Chat App demos

Today we will demo our chat apps and discuss the ways that people solved the various problems that came up.

Some common problems:

• Creating the 2-way references between the room model/manager and the room's view. -- using fields and closures to enable "lazy attachment" where references are established before their values have been initialized.
• Serialization issues:   when you can and cannot use anonymous inner classes (bottom line:  ok for Remote stubs but not for transmitted objects).
• Using Iterable<T> objects in for loops.   (Easy!   for(T t: iterableOfT) {....})
• Put implementation specific code under netid.controller, netid.model, netid.view to avoid name clashes.  Othewise, Java will try to load the deserialized data from one class into the class file stucture of a different class becaue they appear to have the same name, e.g. model.ChatRoom.
• etc.

© 2010 by Stephen Wong