Functional Programming with Streams in Java 9
- 4.3
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Brief Introduction
Improve your Java 9 programs using Functional techniquesDescription
Java 8 introduced a wealth of new features, pushing Java towards the so-called functional programming paradigm. Benefits from this shift include succinctness and ease of developing robust multi-threaded applications.
In this course, we will introduce the key functional features of Java 8 and 9, and explain how they can be used to write code that is more expressive and easily amenable to parallelization.
Specifically, we will first discuss lambda functions and functional interfaces. Using these features, programmers can easily create objects that offer a single specific service, similarly to anonymous classes. We will also explore the predefined functional interfaces that can be found in the Java API, starting from well-known pre-existing ones like Comparator and Runnable.
Reaping the full benefits of lambda functions requires employing them with streams, a new kind of collection with built-in parallelization support. We will examine the relationship between streams and collections, and how the latter have changed as a result of the new language features.
Finally, after having mastered the key features of streams, we will consider the details related to parallel execution, such as the crucial notion of side-effect and the fork-join execution model.
About the Author :
Marco Faella is a professor of Computer Science at the University of Naples “Federico II”, Italy. He has taught classes on Java programming, compiler construction, and software engineering to undergraduate and graduate students since 2005. He is the author of over 50 scientific publications in international conferences and journals. He has also developed scientific software in C++, OCaml, Python, and Java.
Marco is fluent in C, C++, OCaml, Python, and Java and has contributed to the Parma Polyhedra Library, a well-known scientific library for symbolic manipulation of polyhedra.
He has an extensive teaching experience in related topics, specifically a course on advanced Java programming with generics, collections, and multi-threading, which he has been teaching for the last 10 years (Linguaggi di Programmazione 2). He’s also writing 4 chapters of an upcoming book (in Italian) on Oracle OCP Java certification.
Requirements
- Requirements
- This course is intended for all Java programmers who want to take full advantage of the new functional features of Java, including the opportunity to easily parallelize performance-critical sections of code.
- Experienced programmers and senior engineers who have already been exposed to the functional paradigm will also benefit from the course, by quickly picking up the Java way to blend object-oriented and functional programming.
- To follow the course at full speed, the audience is supposed to be familiar with most Java 5 features, including generics and multi-threading, and with the basic interfaces and classes from the Java Collection Framework, namely lists, sets, and iterators.
- Upon completion, viewers will be able to employ the functional features of Java 9 to write code that is clearer, more efficient and easier to maintain.
Packt Publishing
4.3 Raiting
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