Apr 23: Using Iterators

Learning Objectives

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

• Explain the Iterable interface and how to use an Iterator.
• Apply methods from a poorly documented third-party library.
• Implement common interfaces in the java.lang package.

Lesson Outline

Mini Lecture [10 min]

• java.util.Iterator and java.lang.Iterable
  • How to update a collection using an iterator
• Card.java / Deck.java / Main.java
  • Iterator makes "for each card in deck" possible
• IteratorDemo.java working with collections
  • Iterator makes remove() possible while iterating
  • Avoids ConcurrentModificationException

Finish Lab16 [40 min]

• Lab 16: Word Clouds
  • Parts 1–3 on Monday, 4–6 today
  • Submit to Gradescope by Thursday

Your To-Do List

• RSVP for CS Faculty Student Picnic
• Continue reading Week 13
• Make progress on HW 9