Closures (aka Lambdas)

Reading

• Read CH 6.3: Lambda Expressions from “Core Java Volume 1 — Fundamentals” by Cay S. Horstmann. This reading mentions some concepts we have not covered in class (such as ActionListener, Comparator), but you should be able to understand the core points.

Important concepts

• Lambda expressions (aka closures)
• Variable capture
• Java closure syntax variants
• Comparators

Things to consider (exercises for yourself, not to turn in)

• What is the difference between a lambda expression and a method?
• What is a functional interface? How is it connected to lambda expressions?
• How could you change the code at the bottom of page 323 to make it legal, but still use the value of the variable i in the lambda?

Your response

What was particularly interesting, confusing, or exciting to you in this reading?