Book Image

Learn Java 17 Programming - Second Edition

By : Nick Samoylov
4 (1)
Book Image

Learn Java 17 Programming - Second Edition

4 (1)
By: Nick Samoylov

Overview of this book

Java is one of the most preferred languages among developers. It is 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’ll then focus on understanding object-oriented programming (OOP), with exclusive insights into concepts such as 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 with the help of sample programs and practice examples. You’ll 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 and also build a sample project to help you understand the applications of these concepts. By the end of this Java book, you’ll not only have become well-versed with Java 17 but also gained a perspective into the future of this language and have the skills to code efficiently with best practices.
Table of Contents (23 chapters)
1
Part 1: Overview of Java Programming
5
Part 2: Building Blocks of Java
15
Part 3: Advanced Java

Overloading, overriding, and hiding

We have already mentioned overriding in the Inheritance and Abstraction/interface sections. It is a replacement of a non-static method implemented in a parent class with the method of the same signatures in the child class. The default method of an interface also can be overridden in the interface that extends it. Hiding is similar to overriding but applies only to static methods and static, as well as properties of the instance.

Overloading is creating several methods with the same name and different parameters (thus, different signatures) in the same class or interface.

In this section, we will discuss all these concepts and demonstrate how they work for classes and interfaces.

Overloading

It is not possible to have two methods in the same interface or a class with the same signature. To have a different signature, the new method has to have either a new name or a different list of parameter types (and the sequence of the type does...