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What is Observer and Observable?
Joined: Nov 21, 2005
Jan 01, 2006 07:21:00
What is Observer and Observable? What is their use?
Joined: Oct 02, 2003
Jan 01, 2006 07:42:00
They're part of the Observer
. you have one object that notifies a bunch of others when needed. many "observers" may register with an "observable", and all may un-register.
Check out the Head First Design
book, or google "design patterns observer" and you'll find tons of into...
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
Joined: Mar 22, 2005
Jan 01, 2006 08:21:00
There's a good IBM Developerworks tutorial on event delivery techniques, which you can find
. It covers Observer/Observable, JavaBean event techniques and more.
[ January 01, 2006: Message edited by: Ulf Dittmer ]
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It is sorta covered in the
JavaRanch Style Guide
subject: What is Observer and Observable?
a doubt regarding course
Observer and Observable
How to write my own Event ( & Listener for it)??
What are Observer and Observable? How it is usfull?
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