CSSE 220: Day 8

Topics

• Inheritance
• Interfaces
• Polymorphism
• Super classes
• The Object class

Outline

• [10 min] Classes and their relationship to the Object class
• [10 min] Interfaces and polymorphism
• [15 min] Basic Inheritance: Inheritance of fields.
• [10 min] Inheritance of methods
• [5 min] Break
• [15 min] Calling constructor and methods from the super class.
• [30 min] Continue work on project 7.2 (p. 324). Use good software engineering practice to develop your code, in particular follow this process:
  1. Understanding the requirements. (Feel free to play the game.)
  2. Design your classes: provide fields and method stubs. This does not have to be the final set-up but should be an honest effort.
  3. Comment the public portions of your code using JavaDocs. Comment the private portions using inline comments.
  4. Develop JUNIT testcode for the methods in your code.
  5. Implement the method stubs, add and revise methods as necessary.
  6. All the while, use JUNIT testing to ensure your code works as specified.
  7. Perform system testing by ensuring that all the code works well together.
  8. Add a GUI.

Resources

• Code developed in class

Assignments

• Day 9, BC: Read sections 8.6-8.7, 10.3, 10.5.
• Day 9, BC: Finish the project begun in class and submit it to the appropriate drop-box on Angel.