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Beginning Java 8 Language Features: Lambda Expressions, Inner Classes, Th reads, I/O, Collections,and Streams by Kishori Sharan

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CHAPTER 5

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Lambda Expressions

In this chapter, you will learn

  • What lambda expressions are
  • Why we need lambda expressions
  • The syntax for defining lambda expressions
  • Target typing for lambda expressions
  • Commonly used built-in functional interfaces
  • Method and Constructor references
  • Lexical scoping of lambda expressions

What Is a Lambda Expression?

A lambda expression is an unnamed block of code (or an unnamed function) with a list of formal parameters and a body. Sometimes a lambda expression is simply called a lambda. The body of a lambda expression can be a block statement or an expression. An arrow (->) is used to separate the list of parameters ...

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