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

Asynchronous processing

Asynchronous means that the requestor gets the response immediately, but the result is not there. Instead, the requestor waits until the result is sent to them, or saved in the database, or, for example, presented as an object that allows checking if the result is ready. If the latter is the case, the requestor calls a certain method to this object periodically and, when the result is ready, retrieves it using another method on the same object. The advantage of asynchronous processing is that the requestor can do other things while waiting.

In Chapter 8, Multithreading and Concurrent Processing, we have demonstrated how a child thread can be created. Such a child thread then sends a non-asynchronous (blocking) request and waits for its return doing nothing. The main thread, meanwhile, continues executing and periodically calls the child thread object to...