Computer Science 225
Advanced Programming

Spring 2022, Siena College

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Agenda

• Announcements
  • Lab 3: Introduction to Java Swing (in Canvas and GitHub) wrapping up
  • Problem Set 2 due tonight
  • participate in Thursday's programming contest!
    • your bonus for participating will be a one-time 24-hour reduction on the late penalty for a problem set
    • contact Dr. Lim to sign up
• Planning for Exam 1
  • Monday, 2/28
  • you may take the exam in any 2-hour block between 6 and 10 PM
  • exam details coming soon, for now just confirming scheduling (see email with Google form)
• Setting up Lab 4 groups and documents
• Inheritance
  • overriding
  • abstract classes
• In-class exercises (we might not get to all today, 10 points total) - see Canvas for the link to create your repository, commit and push your final version to earn credit (no need to tag in an Issue for grading)
  • an Iterator that reverses the output order of another Iterator
  • an Iterator that sorts the output order of another Iterator based on a Comparator
  • an Iterator that returns values produced by another Iterator filtered by a predicate function

Terminology

• subtype polymorphism
• override
• dynamic binding of method calls

Examples

• Overriding: demonstration of method overriding in derived classes
• AnimalAbstract: an abstract class
• AbstractClass: another example of a simple abstract class