Java Language Features: With Modules, Streams, Threads, I/O, and Lambda Expressions

© Kishori Sharan 2018

Kishori SharanJava Language Featureshttps://doi.org/10.1007/978-1-4842-3348-1_5

5. Lambda Expressions

Kishori Sharan¹ 

(1)

Montgomery, Alabama, USA

 

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

All example programs in this chapter are a member of a jdojo.lambda module , as declared in Listing 5-1.

// module-info.java

module jdojo.lambda {

    exports com.jdojo.lambda;

}

Listing 5-1.

The Declaration of a jdojo.lambda Module

What Is a Lambda Expression?

A lambda expression is an unnamed block of code ...