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

Valhalla project

The motivation for the Valhalla project ( came from the fact that, since Java was first introduced almost 25 years ago, the hardware has changed and the decisions made at that time would have a different outcome today. For example, the operation of getting a value from memory and an arithmetic operation incurred roughly the same cost in terms of the performance time. Nowadays, the situation has changed. The memory access is from 200 to 1,000 times longer than an arithmetic operation. This means that an operation that involves primitive types is much cheaper than the operation based on their wrapping types.

When we do something with two primitive types, we grab values and use them in an operation. When we do the same operation with wrapper types, we first use the reference to access the object (which is now much longer...