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  Libaries and Interfaces  (Read 1283 times)
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Offline rdcarvallo

Senior Member


Projects: 5
Exp: 15 years


2D Java games forever!


« Posted 2008-11-10 19:38:31 »

When porting a game from j2me to j2se I decided to abstract all the graphics/io calls and make a library with two implementations, one for j2me, one for PC.

Now the code in my games is the same but I need two projects in eclipse one linking the PC lib and the other the ME lib.

I have looked that libraires like Xalan uses interfaces for all its calls, and only at runtime the implementation is instantiated.

I want to abstract completely my implementation and use interfaces, but I don't know how to instantiate my implementing clases; Do I need some kind of AbstractFactory?


Online princec

JGO Kernel


Medals: 365
Projects: 3
Exp: 16 years


Eh? Who? What? ... Me?


« Reply #1 - Posted 2008-11-10 20:19:14 »

Pretty much; you choose an appropriate factory at run time which implements a factory interface; and the concrete factory instantiates concrete implementations of your library interfaces.

Cas Smiley

Offline Mr_Light

Senior Member




shiny.


« Reply #2 - Posted 2008-11-10 22:54:37 »

are you looking for http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html#Service%20Provider ?

And have different class-paths in your run configurations.

It's harder to read code than to write it. - it's even harder to write readable code.

The gospel of brother Riven: "The guarantee that all bugs are in *your* code is worth gold." Amen brother a-m-e-n.
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