Mar 28: Polymorphism Lab

Learning Objectives

After today's class, you should be able to:

• Describe the polymorphic algorithms provided by the Java library.
• Implement the Comparable interface to allow objects to be sorted.
• Identify what objects can be assigned to what types of variables.

Reminders

• By Friday 11pm: Do the Week 10 reading and take Quiz08
• By Monday 11pm: Submit HW 8 Part A (5 files, 40 pts)

Lesson Outline

Group Activity [25 min]

• Interfaces and Abstract Classes
• Notice that abstract classes/methods are in italics

Mini Lecture [10 min]

• Lesson: Algorithms (sorting, searching, etc.)
  • Java utility classes: Arrays and Collections
• Example: Algorithms.java and Card.java
  • Works because Card implements Comparable
  • Notice Card is comparable to other Card objects

Lab08 [40 min]

• Lab 8: Bob's SortedAisle