Design Patterns in Java

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Design Patterns in Java

• Kinematic Simulator

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Kinematic Simulator

• Hello, Im Steve
• Heres our project

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Kinematic Simulator

• Hello, Im Helena
• Heres our design

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Instance Diagram
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Class Diagram
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Patterns UsedModel View Controller
SimulatorModel
SimulatorViewer
SimulatorController
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Patterns UsedStrategy
PhysicsStrategy (Abstract Strategy)
SimulatorController (Context)
NewtonianPhysicsStrategy (Concrete Strategy)
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Patterns UsedObserver
observes
SimulatorController
ViewerListener
SimulatorViewer
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Patterns UsedAbstract Factory
EntityFactory (Abstract Factory)
Entity (Abstract Product)
Ball Factory (Concrete Factory)
Ball (Concrete Product)
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The Old DesignClasses and Instances
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Comparison of Old vs. New

• Old
• Works
• Everything has reference to everything else
• Only simulates Balls
• Few, big classes
• Physics hard to find
• AWT

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Comparison of Old vs. New

• New
• Works
• MVC cleans up data flow
• Can add new Entities! I want to add squares.
• Can add new Physics!
• Can add new Views!
• Great!
• It dont mean a thing if it aint got that Swing
• Faster!

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Questions?

• You can play at
• http//minutillo.com/steve/ks/
• Thanks!