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)
Free Chapter
Section 1: Overview of Java Programming
Section 2: Building Blocks of Java
Section 3: Advanced Java

List, Set, and Map interfaces

The Java collections framework consists of the classes and interfaces that implement a collection data structure. Collections are similar to arrays in that respect as they can hold references to objects and can be managed as a group. The difference is that arrays require their capacity being defined before they can be used, while collections can increase and decrease their size automatically as needed. You just add or remove an object reference to a collection, and the collection changes its size accordingly. Another difference is that the collections cannot have their elements to be primitive types, such as short, int, or double. If you need to store such type values, the elements must be of a corresponding wrapper type, such as Short, Integer, or Double, for example.

Java collections support various algorithms of storing and accessing the elements...