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Learn Java 17 Programming

Learn Java 17 Programming - Second Edition

By : Nick Samoylov
3.3 (12)
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Learn Java 17 Programming

Learn Java 17 Programming

3.3 (12)
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)
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1
Part 1: Overview of Java Programming
5
Part 2: Building Blocks of Java
15
Part 3: Advanced Java

String processing

In mainstream programming, String probably is the most popular class. In Chapter 1, Getting Started with Java 17, we learned about this class, its literals, and its specific feature called string immutability. In this section, we will explain how a string can be processed using the String class methods and utility classes from the standard library, and the StringUtils class from the org.apache.commons.lang3 package in particular.

Methods of the String class

The String class has more than 70 methods that enable analyzing, modifying, and comparing strings, and converting numeric literals into the corresponding string literals. To see all the methods of the String class, please refer to the Java API online at https://docs.oracle.com/en/java/javase.

String analysis

The length() method returns the number of characters in the string, as shown in the following code:

String s7 = "42";
System.out.println(s7.length());    //prints...
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Learn Java 17 Programming
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