Functional Programming in Java

And did we mention that you'll have fewer bugs? Let's get started! About the Book Functional Programming in Java teaches you how to incorporate the powerful benefits of functional programming into new and existing Java code.

Functional Programming in Java

Summary Functional Programming in Java teaches Java developers how to incorporate the most powerful benefits of functional programming into new and existing Java code. You'll learn to think functionally about coding tasks in Java and use FP to make your applications easier to understand, optimize, maintain, and scale. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Here's a bold statement: learn functional programming and you'll be a better Java developer. Fortunately, you don't have to master every aspect of FP to get a big payoff. If you take in a few core principles, you'll see an immediate boost in the scalability, readability, and maintainability of your code. And did we mention that you'll have fewer bugs? Let's get started! About the Book Functional Programming in Java teaches you how to incorporate the powerful benefits of functional programming into new and existing Java code. This book uses easy-to-grasp examples, exercises, and illustrations to teach core FP principles such as referential transparency, immutability, persistence, and laziness. Along the way, you'll discover which of the new functionally inspired features of Java 8 will help you most. What's Inside Writing code that's easier to read and reason about Safer concurrent and parallel programming Handling errors without exceptions Java 8 features like lambdas, method references, and functional interfaces About the Reader Written for Java developers with no previous FP experience. About the Author Pierre-Yves Saumont is a seasoned Java developer with three decades of experience designing and building enterprise software. He is an R&D engineer at Alcatel-Lucent Submarine Networks. Table of Contents What is functional programming? Using functions in Java Making Java more functional Recursion, corecursion, and memoization Data handling with lists Dealing with optional data Handling errors and exceptions Advanced list handling Working with laziness More data handling with trees Solving real problems with advanced trees Handling state mutation in a functional way Functional input/output Sharing mutable state with actors Solving common problems functionally

Functional Programming in Java

If you're eager to take advantage of the new features in the language, this is the book for you. What you need: Java 8 with support for lambda expressions and the JDK is required to make use of the concepts and the examples in this book.

Functional Programming in Java

Intermediate level, for programmers fairly familiar with Java, but new to the functional style of programming and lambda expressions. Get ready to program in a whole new way. Functional Programming in Java will help you quickly get on top of the new, essential Java 8 language features and the functional style that will change and improve your code. This short, targeted book will help you make the paradigm shift from the old imperative way to a less error-prone, more elegant, and concise coding style that's also a breeze to parallelize. You'll explore the syntax and semantics of lambda expressions, method and constructor references, and functional interfaces. You'll design and write applications better using the new standards in Java 8 and the JDK. Lambda expressions are lightweight, highly concise anonymous methods backed by functional interfaces in Java 8. You can use them to leap forward into a whole new world of programming in Java. With functional programming capabilities, which have been around for decades in other languages, you can now write elegant, concise, less error-prone code using standard Java. This book will guide you though the paradigm change, offer the essential details about the new features, and show you how to transition from your old way of coding to an improved style. In this book you'll see popular design patterns, such as decorator, builder, and strategy, come to life to solve common design problems, but with little ceremony and effort. With these new capabilities in hand, Functional Programming in Java will help you pick up techniques to implement designs that were beyond easy reach in earlier versions of Java. You'll see how you can reap the benefits of tail call optimization, memoization, and effortless parallelization techniques. Java 8 will change the way you write applications. If you're eager to take advantage of the new features in the language, this is the book for you. What you need: Java 8 with support for lambda expressions and the JDK is required to make use of the concepts and the examples in this book.

Functional Programming for Java Developers

Where does that leave Java developers? This concise book offers a pragmatic, approachable introduction to FP for Java developers or anyone who uses an object-oriented language.

Functional Programming for Java Developers

Software development today is embracing functional programming (FP), whether it's for writing concurrent programs or for managing Big Data. Where does that leave Java developers? This concise book offers a pragmatic, approachable introduction to FP for Java developers or anyone who uses an object-oriented language. Dean Wampler, Java expert and author of Programming Scala (O'Reilly), shows you how to apply FP principles such as immutability, avoidance of side-effects, and higher-order functions to your Java code. Each chapter provides exercises to help you practice what you've learned. Once you grasp the benefits of functional programming, you’ll discover that it improves all of the code you write. Learn basic FP principles and apply them to object-oriented programming Discover how FP is more concise and modular than OOP Get useful FP lessons for your Java type design—such as avoiding nulls Design data structures and algorithms using functional programming principles Write concurrent programs using the Actor model and software transactional memory Use functional libraries and frameworks for Java—and learn where to go next to deepen your functional programming skills

Java Die Neuerungen in Version 9 Bis 14

Dieses Buch richtet sich an Leser, die bereits solides Java-Know-how besitzen und sich prägnant über die wichtigsten Neuerungen in den Java-Versionen 9 bis 14 informieren und Ihr Wissen auf den neuesten Stand bringen möchten.

Java   Die Neuerungen in Version 9 Bis 14

Dieses Buch richtet sich an Leser, die bereits solides Java-Know-how besitzen und sich prägnant über die wichtigsten Neuerungen in den Java-Versionen 9 bis 14 informieren und Ihr Wissen auf den neuesten Stand bringen möchten. Vertiefen können Sie Ihr Wissen durch eine Vielzahl an Übungen. Wird regelmäßig auf die aktuellen Java-Versionen fortgeschrieben.

Functional Java

It is an update like no other in Java's history, introducing new syntax, new libraries, and a new programming paradigm. This guide will help you make sense of these changes and keep you on top of the latest Java programming techniques.

Functional Java

With the release of version 8, functional programming has finally come to Java-bringing a brand new way of thinking about code. It is an update like no other in Java's history, introducing new syntax, new libraries, and a new programming paradigm. This guide will help you make sense of these changes and keep you on top of the latest Java programming techniques. Written concisely by a veteran Java practitioner, it is perfect for developers wanting working knowledge of Java-style functional programming. Contents: The juncture of Java and functional programming: An examination of functional programming and how it fits into Java. The complete anatomy of the lambda: An analysis of lambdas, method references, default methods, and functional interfaces. New and improved libraries: A description of the standard functional interfaces and the newly functionalized Collections library. Streams: A look into the Streams library, how to think in streams, and how to best use streams-the most exciting Java 8 feature. Parallelism: A discussion on functional-style parallelism for modern multi-core CPU architectures. Java functional theory: An overview of Java-style currying, higher-order functions, partial application, and functional composition. Thinking functionally: A primer on applying functional thinking to solve problems.

Functional Programming in Java

This short, targeted book will help you make the paradigm shift from the old imperative way to a less error-prone, more elegant, and concise coding style that's also a breeze to parallelize.

Functional Programming in Java


Java 8 Lambdas

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.

Java 8 Lambdas

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. You’ll learn through code examples, exercises, and fluid explanations how these anonymous functions will help you write simple, clean, library-level code that solves business problems. Lambda expressions are a fairly simple change to Java, and the first part of the book shows you how to use them properly. Later chapters show you how lambda functions help you improve performance with parallelism, write simpler concurrent code, and model your domain more accurately, including building better DSLs. Use exercises in each chapter to help you master lambda expressions in Java 8 quickly Explore streams, advanced collections, and other Java 8 library improvements Leverage multicore CPUs and improve performance with data parallelism Use techniques to “lambdify” your existing codebase or library code Learn practical solutions for lambda expression unit testing and debugging Implement SOLID principles of object-oriented programming with lambdas Write concurrent applications that efficiently perform message passing and non-blocking I/O

Learn Functional Programming with Java

Before proceeding with this book, you should have a basic understanding of Java, and execution of programs, etc.

Learn Functional Programming with Java

From Java 8 onwards, many functional programming elements are introduced like lambda expression, functional interfaces in Java. These elements are to ease functional programming in Java which was originally an imperative and Object-Oriented language. This book is designed for Software Professionals who are willing to learn Functional Programming using Java in simple and easy steps. This book will give you an understanding of the Functional Programming concepts and after completing this book you will be at an intermediate level of expertise from where you can take yourself to a higher level of expertise. Before proceeding with this book, you should have a basic understanding of Java, and execution of programs, etc.

Java Lambdas Introduction to Java 8 Functional Programming

The deep descriptions are provided for Lambdas and Lambda expressions.

Java Lambdas   Introduction to Java 8 Functional Programming

The deep descriptions are provided for Lambdas and Lambda expressions. A good starting point especially for those who are still new to lambdas and functional programming as a whole. All the complicated concepts have been explained in details, from type inference, target types to functional interfaces and how and where should we use Lambda expressions.

Parallel Functional Programming with Java LiveLessons

Content for titles in this program is made available throughout the development cycle, so products may not be complete, edited, or finalized, including video post-production editing. 16+ Hours of Video Instruction Parallel Functional ...

Parallel Functional Programming with Java LiveLessons

Sneak Peek The Sneak Peek program provides early access to Pearson video products and is exclusively available to Safari subscribers. Content for titles in this program is made available throughout the development cycle, so products may not be complete, edited, or finalized, including video post-production editing. 16+ Hours of Video Instruction Parallel Functional Programming in Java LiveLessons describes by example how to apply Java functional programming features and frameworks to alleviate the complexity of developing software that can run efficiently and scalably on multi-core and distributed-core processors. In this course, learn how to develop programs using powerful object-oriented and functional programming language features and frameworks supported by Java. This course first provides an introduction to Java's foundational functional programming features, including lambda expressions, method references, and functional interfaces. These core features provide the foundation for the next topic in this course: the Java's Streams framework, which supports functional-style sequential and parallel operations on streams of elements, such as map-reduce transformations on Java collections. This course also shows by example how to develop efficient reactive programs that run scalably on multi-core processors using powerful object-oriented and functional programming language features and parallelism frameworks supported by Java. This portion of the course describes how Java leverages its functional programming features to create the completable futures framework. This framework defines a powerful reactive programming model that allows programmers to run multiple asynchronous operations concurrently in one or more pools of threads and process their results asynchronously with respect to other operations in a program. Skill Level Intermediate Learn How To Develop efficient parallel and reactive programs using powerful modern Java object-oriented and functional programming language features and frameworks Recognize the inherent and accidental complexities involved with developing parallel and reactive software for modern Java clients and servers Understand how common software patterns and modern Java parallel and reactive programming mechanisms can and cannot help to alleviate this complexity Know where to find additional sources of information on how to successfully develop robust parallel and reactive programs in modern Java Who Should Take This C...

Functional Programming For Java LiveLessons

Functional Programming for Java LiveLessons provides a solid foundation for designing and creating Java code using the functional programming style.

Functional Programming For Java LiveLessons

7+ Hours of Video Instruction Almost 8 hours teaching Java programmers how to design and create Java code using functional programming style and the new language features added with Java 8 that support that style. Functional Programming for Java LiveLessons provides a solid foundation for designing and creating Java code using the functional programming style. Simon Roberts, best-selling author of Java Certification and programming books and video titles, has created a unique video course using live-action lectures, code demos, and whiteboard instructions to take learners on a learning journey by telling a story. Functional Programming for Java LiveLessons is a complete resource where each new concept is introduced gradually, based on examples that start in the familiar object-oriented style. A solid foundation is created before adding on more complicated concepts. The discussion then examines how this example might be improved and introduces functional concepts in small steps, building in relevant code as you go and in a way that emphasizes understanding. Exercises are suggested throughout, allowing the viewer to stop and try solving the examples on their own before continuing. The code for this course is available as a GIT repository and viewers are encouraged to work with it to further their understanding. Topics include: From an OO design pattern to a functional foundation Building more functional concepts The power of combinations and modifications Working with pure functions Streams API Advanced patterns and exception handling Learn How To Approach Java in a more functional way rather than an object-oriented approach Use advanced Java syntax features: nested and inner classes, anonymous inner classes, and lambda expressions Define simple generic methods, increasing the generality of your code Compose and adapt functions, allowing fine-grained reuse of code and avoid duplication Create software with dynamically variable rather than fixed behavior Understand the benefits of, and write software using pure functions Understand and use the Java 8 Streams API, including the monad concept, reduce and collect operations, and the parallel execution of Streams Handle exceptions, both checked and unchecked, in Stream processing, and other situations where exceptions would break the system either compile or runtime. Who Should Take This Course Java programmers looking to leverage the new functional features of Java 8 Java programmers who are finding...

Functional Programming in Kotlin

By learning the core principles and practices of functional programming outlined in this book, you''ll start writing code that''s easier to read, easier to test and reuse, better for concurrency, and less prone to bugs. about the book ...

Functional Programming in Kotlin

Functional Programming in Kotlin is a serious tutorial for programmers looking to learn FP and apply it to the everyday business of coding. Based on the bestselling Functional Programming in Scala, this book guides intermediate Java and Kotlin programmers from basic techniques to advanced topics in a logical, concise, and clear progression. In this authoritative guide, you'll take on the challenge of learning functional programming from first principles, and start writing Kotlin code that's easier to read, easier to reuse, better for concurrency, and less prone to bugs and errors. Functional Programming in Kotlin is a serious tutorial for programmers looking to learn FP and apply it to the everyday business of coding. Based on the bestselling Functional Programming in Scala, this book guides intermediate Java and Kotlin programmers from basic techniques to advanced topics in a logical, concise, and clear progression. In it, you'll find concrete examples and exercises that open up the world of functional programming. The book will deliver practical mastery of FP using Kotlin and a valuable perspective on program design that you can apply to other languages. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.

Functional Programming in Java

Functional Programming in Java


JFun

A function is a good way of specifying a computation since in each computation the result depends in a certain way on the parameters, and using functions makes a program modular and well-structured.

JFun

A function is a good way of specifying a computation since in each computation the result depends in a certain way on the parameters, and using functions makes a program modular and well-structured. In order to reduce the development effort and future programming costs caused by bugs and maintenance problems, writing well-structured and modular programs has become crucial as software becomes more and more complex. Since modularity is the key to successful programming, functional languages are vitally important to the real world. In this paper we try to show that writing programs in an object-oriented language by using functional programming concepts is possible. As examples, list and tree manipulation functions, numerical integration and differentiation, and alpha-beta heuristic which is an algorithm from Artificial Intelligence used in game-playing programs are implemented in Java programming language using functional programming concepts.

Functional Programming in Java

How functional techniques improve your Java programs Pierre-Yves Saumont. parameterized method calls), don't be afraid: I'll explain what they mean and why they're needed. You don't need to have prior experience in functional ...

Functional Programming in Java

Summary Functional Programming in Java teaches Java developers how to incorporate the most powerful benefits of functional programming into new and existing Java code. You'll learn to think functionally about coding tasks in Java and use FP to make your applications easier to understand, optimize, maintain, and scale. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Here's a bold statement: learn functional programming and you'll be a better Java developer. Fortunately, you don't have to master every aspect of FP to get a big payoff. If you take in a few core principles, you'll see an immediate boost in the scalability, readability, and maintainability of your code. And did we mention that you'll have fewer bugs? Let's get started! About the Book Functional Programming in Java teaches you how to incorporate the powerful benefits of functional programming into new and existing Java code. This book uses easy-to-grasp examples, exercises, and illustrations to teach core FP principles such as referential transparency, immutability, persistence, and laziness. Along the way, you'll discover which of the new functionally inspired features of Java 8 will help you most. What's Inside Writing code that's easier to read and reason about Safer concurrent and parallel programming Handling errors without exceptions Java 8 features like lambdas, method references, and functional interfaces About the Reader Written for Java developers with no previous FP experience. About the Author Pierre-Yves Saumont is a seasoned Java developer with three decades of experience designing and building enterprise software. He is an R&D engineer at Alcatel-Lucent Submarine Networks. Table of Contents What is functional programming? Using functions in Java Making Java more functional Recursion, corecursion, and memoization Data handling with lists Dealing with optional data Handling errors and exceptions Advanced list handling Working with laziness More data handling with trees Solving real problems with advanced trees Handling state mutation in a functional way Functional input/output Sharing mutable state with actors Solving common problems functionally

Java 8 Lambdas and Streams

Java 8 Lambdas and Streams

"In this Java 8 Lambdas and Streams training course, expert author Madhusudhan Konda will teach you how to develop Java applications using Java 8. This course is designed for users that already have experience with Java. You will start by learning about lambdas, including the lambda syntax, target typing, and lambda scoping. From there, Madhu will teach you about interfaces, functions, streams, and stream common operations. This video tutorial also covers advanced streams, including grouping, partitioning, and flat map. Finally, you will learn about parallel streams, including serial execution, sequential or parallel, and performance measurements. Once you have completed this computer based training course, you will have gained a solid understanding of functional Java programming."--Resource description page.

Java Lambdas and the Stream API

Learn how to leverage the updated collections API to facilitate common functional programming patterns such as map/filter/reduce.

Java Lambdas and the Stream API

Come up to speed with Java functional programming and write effective Java code with less effort using lambdas and the stream API. Make your Java project code more reliable by using the declarative approach provided by these new Java features. Learn how to leverage the updated collections API to facilitate common functional programming patterns such as map/filter/reduce. If you've ever stumbled through constructing for loops and while loops, this video will add to your programming toolbox and allow you to leave such heavy lifting to the stream API. You'll begin your journey with the syntax of Java lambdas, what they are, and how to use them. You will then be introduced to Java streams and the various ways of creating them for the purpose of processing data. You will also learn about the updates which have been made to the Java collections API for supporting streams. Along the way you will be taught the streams API and how to use the methods defined in the Stream class to process data sources to obtain the results you desire by employing lambdas with the Stream class' operations. What You Will Learn Write functional interfaces for defining lambdas Master lambda syntax for implementing anonymous functions Create streams associated with data sources Process data through stream operations Use method references for simplifying lambda expressions Discover parallel and sequential streams and how they differ Who This Video Is For Software developers familiar with Java who wish to employ functional programming techniques in their software projects in order to write reliable, compact, and easy-to-read Java code.

Learning Java Functional Programming

The end of the book brings together many of these functional programming techniques to create a more comprehensive application. You will find this book a very useful resource to learn and apply functional programming techniques in Java.

Learning Java Functional Programming

Create robust and maintainable Java applications using the functional style of programming About This Book Explore how you can blend object-oriented and functional programming styles in Java Use lambda expressions to write flexible and succinct code A tutorial that strengthens your fundamentals in functional programming techniques to enhance your applications Who This Book Is For If you are a Java developer with object-oriented experience and want to use a functional programming approach in your applications, then this book is for you. All you need to get started is familiarity with basic Java object-oriented programming concepts. What You Will Learn Use lambda expressions to simplyfy code Use function composition to achieve code fluency Apply streams to simply implementations and achieve parallelism Incorporate recursion to support an application's functionality Provide more robust implementations using Optionals Implement design patterns with less code Refactor object-oriented code to create a functional solution Use debugging and testing techniques specific to functional programs In Detail Functional programming is an increasingly popular technology that allows you to simplify many tasks that are often cumbersome and awkward using an object-oriented approach. It is important to understand this approach and know how and when to apply it. Functional programming requires a different mindset, but once mastered it can be very rewarding. This book simplifies the learning process as a problem is described followed by its implementation using an object-oriented approach and then a solution is provided using appropriate functional programming techniques. Writing succinct and maintainable code is facilitated by many functional programming techniques including lambda expressions and streams. In this book, you will see numerous examples of how these techniques can be applied starting with an introduction to lambda expressions. Next, you will see how they can replace older approaches and be combined to achieve surprisingly elegant solutions to problems. This is followed by the investigation of related concepts such as the Optional class and monads, which offer an additional approach to handle problems. Design patterns have been instrumental in solving common problems. You will learn how these are enhanced with functional techniques. To transition from an object-oriented approach to a functional one, it is useful to have IDE support. IDE tools to refactor, debug, and test functional programs are demonstrated through the chapters. The end of the book brings together many of these functional programming techniques to create a more comprehensive application. You will find this book a very useful resource to learn and apply functional programming techniques in Java. Style and approach In this tutorial, each chapter starts with an introduction to the terms and concepts covered in that chapter. It quickly progresses to contrast an object-oriented approach with a functional approach using numerous code examples.

Functional Programming in Scala

In it, you'll find concrete examples and exercises that open up the world of functional programming. This book assumes no prior experience with functional programming. Some prior exposure to Scala or Java is helpful.

Functional Programming in Scala

Helps programmers learn functional programming and apply it to the everyday business of coding. Original.

Hands on Functional Programming with Java

"Functional programming, a popular programming paradigm used to simplify many tasks, will help you write flexible and succinct code.

Hands on Functional Programming with Java

"Functional programming, a popular programming paradigm used to simplify many tasks, will help you write flexible and succinct code. This paradigm makes programs easier to reason with because they're deterministic (one specific input will always give you the same output). This course takes a thought-leadership approach, gently introduces you to Functional Programming, and takes you all the way to becoming a master of the paradigm. You'll then learn how to work with higher-order functions, lambda functions, collections and more. You'll learn how to apply the best data structures and algorithms that optimize functions and also how to reuse and refactor functional blocks of code. This course is updated to Java 12 so that you will be ahead of the crowd. By the end of the course, you will have mastered the concepts regarding functional programming along with OOP, to build robust and highly testable applications."--Resource description page.