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Advanced OOP - Reference Handout

What You'll Learn Today

Today we'll explore advanced Object-Oriented Programming concepts in Java. You'll learn about inheritance, interfaces, polymorphism, and basic design patterns. We'll apply these concepts in a mini-project to solidify your understanding.

Key Concepts

Inheritance

  • Extending classes
  • The extends keyword
  • Method overriding
  • The super keyword
  • Types of inheritance

Interfaces

  • Creating and implementing interfaces
  • The implements keyword
  • Default methods
  • Multiple interface implementation
  • When to use interfaces vs inheritance

Polymorphism

  • Method overriding vs overloading
  • Runtime polymorphism
  • Type casting
  • instanceof operator
  • Abstract methods and classes

Basic Design Patterns

  • Singleton pattern
  • Factory pattern
  • Observer pattern
  • Strategy pattern
  • When to use each pattern

Mini-Project: Animal Kingdom Simulator

Create a simple simulation with: - Base Animal class - Different animal types (inheritance) - Behavior interfaces - Polymorphic method calls - At least one design pattern

Project Requirements

  1. Create hierarchy of animal classes
  2. Implement movement and sound interfaces
  3. Use polymorphism for animal behaviors
  4. Apply a design pattern of your choice
  5. Add simple documentation

Additional Resources

  • Java Documentation on Inheritance
  • Design Patterns reference
  • Online Java Visualizer
  • Sample code and solutions

Notes

  • Focus on understanding the concepts
  • Ask questions about real-world applications
  • Take breaks when needed
  • Keep your code clean and organized
  • Document your design decisions