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Herança x interface x associação - quando usar um ou outro

by Cássio R Eskelsen 5. agosto 2008 22:45

Na empresa onde trabalho, estamos criando uma nova arquitetura de sistemas foi me solicitado que criasse um pequeno exemplo usando essa arquitetura, com as classes Cidade, Estado, etc.

A princípio, o design mais comum seria o de criar uma superclasse comum (ex. "Região") e a partir dela herdar cada uma.

No entanto, IMHO, não é uma resposa tão óbvia, já que uma Cidade "é um" Região mas também "é um" divisão política.

Talvez, nesse caso, fosse mais interessante usar Interface.

Alguns links para estudo:

http://guj.com.br/posts/list/87814.java

http://blog.caelum.com.br/2006/10/14/como-nao-aprender-orientacao-a-objetos-heranca/

http://www.datasuldirect.com.br/flash/JAVA_SC/Or_Obj.pdf

UPDATE (11/08)

Mais um post interessante sobre o mesmo assunto:No, inheritance is not the way to achieve code reuse!

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Arquitetura | Design Pattern

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