Book Image

Learn Java 12 Programming

By : Nick Samoylov
Book Image

Learn Java 12 Programming

By: Nick Samoylov

Overview of this book

Java is one of the preferred languages among developers, used in everything right from smartphones, and game consoles to even supercomputers, and its new features simply add to the richness of the language. This book on Java programming begins by helping you learn how to install the Java Development Kit. You will then focus on understanding object-oriented programming (OOP), with exclusive insights into concepts like abstraction, encapsulation, inheritance, and polymorphism, which will help you when programming for real-world apps. Next, you’ll cover fundamental programming structures of Java such as data structures and algorithms that will serve as the building blocks for your apps. You will also delve into core programming topics that will assist you with error handling, debugging, and testing your apps. As you progress, you’ll move on to advanced topics such as Java libraries, database management, and network programming, which will hone your skills in building professional-grade apps. Further on, you’ll understand how to create a graphic user interface using JavaFX and learn to build scalable apps by taking advantage of reactive and functional programming. By the end of this book, you’ll not only be well versed with Java 10, 11, and 12, but also gain a perspective into the future of this language and software development in general.
Table of Contents (25 chapters)
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Section 1: Overview of Java Programming
Section 2: Building Blocks of Java
Section 3: Advanced Java

Streams as a source of data and operations

Lambda expressions, described and demonstrated in the previous chapter, together with functional interfaces added a powerful functional programming capability to Java. They allow passing behavior (functions) as parameters to libraries optimized for the performance of the data processing. This way, an application programmer can concentrate on the business aspects of the developed system, leaving the performance aspects to the specialists – the authors of the library. One example of such a library is, which is going to be the focus of this chapter.

In Chapter 5, Strings, Input/Output, and Files, we talked about I/O streams as the source of data, but beyond that, they are not of much help for the further processing of the data. And they are byte- or character-based, not object-based. You can create a stream of objects...