Lecture 3

Lecture 3: Java Interfaces
Date: Monday, March 1, 2021

Agenda

Announcements
- Upcoming substitute lab instructors and remote/online lecture meetings
  - this week's labs will be run by some excellent substitute instructors
  - Friday's lecture will be online synchronous
  - next Monday's lecture will be online asynchronous, watch for info
  - office hours are cancelled for Wednesday and Thursday, remote only through next Tuesday (most likely)
  - I expect to be back on campus a week from Wednesday and Thursday for our Lab 3 meetings
- Problem Set 1 due tonight
  - however, I will accept submissions through Tuesday night without penalty
  - please continue to create Issues for each problem as you have it ready for testing - don't wait until you have them all done!
  - a video discussing sample solutions will be made available soon
- Lab 1: Java and Data Structures Refresher (in Canvas and GitHub) due 24 hours before your lab meeting this week
  - I will continue to check your documents periodically, you can email or tag me to request a quicker look
Finalizing setup for Lab 2: Java Interfaces (in Canvas and GitHub)
Wrapping up Lecture 2 in-class
Wrapping up the "Java You Know" recap, including running BuildingStrings
Java Interfaces
- motivation
- implementing existing interfaces
- creating interfaces
- anonymous classes
In-class exercise (2 assignment points, put in the same shared document from In-class 2)
- Write a method that takes an Iterator<String> as its only parameter and returns the String that comes first alphabetically.

Terminology

Examples