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Strategy Design Pattern

Strategy Design Pattern. B.Ramamurthy. Strategy. Often there are alternative ways or strategies to achieve a goal. These strategies are usually realized using algorithms. Only one of them may be used depending on the context .

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Strategy Design Pattern

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  1. Strategy Design Pattern B.Ramamurthy B.Ramamurthy

  2. Strategy • Often there are alternative ways or strategies to achieve a goal. • These strategies are usually realized using algorithms. • Only one of them may be used depending on the context. • The algorithms representing the strategies can be encapsulated each in a class. • Strategy pattern itself represents a collection of these alternative ways in a hierarchy of classes, each class representing an alternative. B.Ramamurthy

  3. Strategy Design B.Ramamurthy

  4. Examples • Different layouts for graphical components (JFrame, JPanel, JApplet) • Checkout counter software has TaxCalculator class. Depending on the place (context) the tax computation differs. • Mr.X’s strategies in the ScotlandYard game. B.Ramamurthy

  5. Mr.X and Strategy Design Pattern B.Ramamurthy

  6. Layout Example B.Ramamurthy

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