Design Patterns
Because Design Patterns are part of the assignment and exam (also in other Sun exams), you need to know about them. A Design Pattern defines a named design strategy and model outlining solution that addresses a set of responsibilities in a popular context. In short, a Design Pattern constitutes a model that helps meet a recurring need. Most Pattern books say it this way: a solution for a recurring problem in a given context. This popular definition is based on E. Gamma, R. Helm, R. Johnson, and J. Vlissides' book Design Patterns: Elements of Reusable Object-Oriented Software (Addison-Wesley, 1995), which applies Christopher Alexander's (A Pattern Language, Oxford University Press, 1977) seminal architecture innovation of Patterns ...
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