Ch6 Lambdas and Functional Interfaces

Question 1

What is a lambda expression?

Answer 1

A lambda expression is a short block of code which takes in parameters and returns a value.

Question 2

What are the rules for accessing a variable from a lambda body inside a method?

Answer 2

• Instance variable: allowed
• Static variable: allowed
• Local variable: allowed if effectively final
• Method parameter: allowed if effictively final
• Lambda parameter: allowed