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

The java.time package

There are many classes in the java.time package and its sub-packages. They were introduced as a replacement for other (older packages) that handled date and time. The new classes are thread-safe (hence, better suited for multithreaded processing), and what is also important is that they are more consistently designed and easier to understand. Also, the new implementation follows International Organization for Standardization (ISO) standards as regards date and time formats, but allows any other custom format to be used as well.

We will describe the following five main classes and demonstrate how to use them:

  • java.time.LocalDate
  • java.time.LocalTime
  • java.time.LocalDateTime
  • java.time.Period
  • java.time.Duration

All these and other classes of the java.time package, as well as its sub-packages, are rich in various functionality that covers all practical cases. But we are not going to discuss all of them; we will just introduce the basics...