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Interface/Implemented class reference

UdayK Kumar
Greenhorn

Joined: Aug 05, 2009
Posts: 26

Hi,

Could you please elaborate in depth for the below code with suitable example?

#1)
List l = new ArrayList(); // Why GOOD.

#2)
ArrayList l = new ArrayList(); // Why BAD.


I saw many of explanation for the above code, but i didn't find any example for supporting #1) code.

Please explain me in depth...


Muhammad Khojaye
Ranch Hand

Joined: Apr 12, 2009
Posts: 449

Search for 'programming to an interface'.


http://muhammadkhojaye.blogspot.com/
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Interface/Implemented class reference
 
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