RE: Understanding Implements

From your post, I would guess SingleThreadModel is a marker.  

From the various posts, I gather that Interfaces are containers that store
classes that have that are similar funtionality but diverse ways of
implementing functionality.

I still a bit hazy on your statement "if you implement the required
methods."  Can you elaborate a bit....

thanks!

dan


-----Original Message-----
From: Joe Teff [mailto:joeteff@earthlink.net]
Sent: Tuesday, March 20, 2001 1:02 PM
To: JAVA400-L@midrange.com
Subject: RE: Understanding Implements


Interfaces are used in two ways:
1. Contracts - if you implement the required methods, then you can be one
(i.e. your object can be referenced by that kind of data type).  Container c
= new JPanel();
2. Markers - no methods to implement. Used to mark objects for a specific
purpose. Serializable is an example. It has no methods. Any class that
implements it, can be used in readObject() and writeObject() methods.
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