Lambda Expressions and Method References

Java Tutorials - Herong's Tutorial Examples

∟Lambda Expressions and Method References

This chapter provides tutorial notes on lambda expressions and method references introduced in Java 8. Topics include lambda expression syntax; method reference syntax; single abstract method interface (functional interface); using lambda expressions in stream pipeline operations.

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What Is Lambda Expression

LambdaCalculator.java - Lambda Expression Example

Lambda Expression Syntax Options

Lambda Expression as Method Reference

Method Reference Example - LambdaMethodRefernce.java

Lambda Expression Stream Pipeline Operations

Conclusion:

A functional interface is a single abstract method interface.
A lambda expression is a shorthand form of a special anonymous class that implements a functional interface.
A method expression is a shorthand form of a special lambda expression that a single invocation of a static method.
The best places to use lambda expressions are in stream pipeline operations.
Lambda expressions, method references and stream pipeline operations are introduced in Java 8.