[ajug-members] correct interface programming

[Gabsaga Tata]

Not clear what your question is about but are you trying to say that if you extend some class you don't have a contract to implement the methods of the super class but if you implement some class you have a contract to implement the methods of that class? Well, if you extend an abstract class that has all abstract methods then you have a contract to implement all the methods of that abstract class.

Gabsaga
-----Original Message-----
From: 521 [mailto:521 at ofig.org]
Sent: Thursday, July 24, 2008 03:43 PM
To: ajug-members at ajug.org
Subject: [ajug-members] correct interface programming

am i saying this correctly?, that which is below... -barclay {{{ if i program to an interface, i do not have to worry about the number of interfaces that are implemented, do i? but do i not have to use all methods in an implemented interface? i do have to- it's a contract. correct? and because you can only extend one class, you have no contract there. correct? can someone see what my question is? a tree; a tree can grow, a tree can provide shade; and a tree can provide lumber for table-tennis. so my tree class is designed... then if i am implementing a 'tree'- it depends on which implementation i use thus have a contract to use certain methods }}} _______________________________________________ ajug-members mailing list ajug-members at ajug.org http://www.ajug.org/mailman/listinfo/ajug-members 
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