Observer Design Pattern in Java

The Observer design pattern is a behavioral pattern that defines a one-to-many dependency between objects. When one object (the subject) changes state, all its dependent objects (observers) are notifi...
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Singleton de forma simples

Singleton de forma simples
Singleton é um padrão criacional que garante uma única instância para um objeto, além de fornecer um ponto de acesso global para essa instância. Em outras palavras, o objeto será criado apenas ...
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Template Design Pattern

Hello reader!I hope you feeling good today because you are gonna learn something pretty cool! Well at least thats how I see it...Right, so I wont go into details explaining in theory what it is I am p...
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