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Java 8 in Action
book

Java 8 in Action

by Mario Fusco, Alan Mycroft, Raoul-Gabriel Urma
August 2014
Intermediate to advanced content levelIntermediate to advanced
424 pages
13h 50m
English
Manning Publications
Content preview from Java 8 in Action

Appendix D. Lambdas and JVM bytecode

You may wonder how the Java compiler implements lambda expressions and how the Java virtual machine (JVM) deals with them. If you think lambda expressions can simply be translated to anonymous classes, you should read on. This appendix briefly discusses how lambda expressions are compiled, by examining the generated class files.

D.1. Anonymous classes

We showed in chapter 2 that anonymous classes can be used to declare and instantiate a class at the same time. As a result, just like lambda expressions, they can be used to provide the implementation for a functional interface.

Because a lambda expression provides the implementation for the abstract method of a functional interface, it would seem straightforward ...

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