Java 8 Lambdas: Pragmatic Functional Programming

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What are lambda functions? What is functional programming? Then use the results for something else. Perspective - for loops! You can use lambdas for some amazing stuff They returned from the ride With the lady inside And a smile on the face of the tiger. Java 8 is the new Groovy ;- import java. Arrays; import java. Built-in functional interfaces Built-in functional interfaces are a part of the java.

An easier path to functional programming in Java

Stream to transform or operate on the passed value and return a result. Predicate interface Stream. Predicate interface You can call test method on a Predicate object. Predicate interface: Example import java.


List; import java. Consumer interface Stream.

Consumer interface You can call accept method on a Consumer object. Consumer interface: Example import java. Stream; import java. Function interface import java. Function interface You can call apply method on a Function object. Function interface: Example import java. Supplier interface import java.

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Supplier interface Summary of built-in interfaces in java. Java 8 streams and parallel streams : Excellent example of applying functional programming in practice But what are streams? Streams are lazy! Parallel Streams I really really hate concurrency problems Parallel code Serial code Sometimes, dreams do come true even at 86 :- So, keep dreaming till you become 86!

Internally, parallel streams make use of fork-join framework Design Smells: Example Can I get rid of these parts?

Learn Java 8: Lambdas and Functional Programming

So What?! Refactoring for Date Replace inheritance with delegation Date, Calendar, and TimeZone Java 8 replaces these types Refactored Example … You can use only date, time, or even timezone, and combine them as needed!

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Important Methods in LocalDate LocalTime System. Important Methods in LocalTime Instant import java. Important Methods in Period The Java 8 date and time API differentiates how humans and computers use date- and time-related information. Orders usually ship within business days. Please contact the seller directly if you wish to return an order.

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Acerca de Sinopsis: If you're a developer with core Java SE skills, this hands-on book takes you through the language changes in Java 8 triggered by the addition of lambda expressions. We ship our books to over countries around the globe and we are always looking to add more countries to the list. We really, really love books and offer millions of titles, currently over 10 million of them, with this figure increasing daily. Living by our motto, 'Bookseller to the World', we focus on offering as many titles as possible to as many customers as possible.

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