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The Java Workshop

You're reading from   The Java Workshop Learn object-oriented programming and kickstart your career in software development

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Product type Paperback
Published in Oct 2019
Publisher Packt
ISBN-13 9781838986698
Length 606 pages
Edition 1st Edition
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Authors (3):
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Eric Foster-Johnson Eric Foster-Johnson
Author Profile Icon Eric Foster-Johnson
Eric Foster-Johnson
Andreas Göransson Andreas Göransson
Author Profile Icon Andreas Göransson
Andreas Göransson
David Cuartielles David Cuartielles
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David Cuartielles
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Toc

Table of Contents (20) Chapters Close

Preface 1. Getting Started FREE CHAPTER 2. Learning the Basics 3. Object-Oriented Programming 4. Collections, Lists and Java's Built-In APIs 5. Exceptions 6. Libraries, Packages, and Modules 7. Databases and JDBC 8. Sockets, Files, and Streams 9. Working with HTTP 10. Encryption 11. Processes 12. Regular Expressions 13. Functional Programming with Lambda Expressions 14. Recursion 15. Processing Data with Streams 16. Predicates and Other Functional Interfaces 17. Reactive Programming with Java Flow 18. Unit Testing Appendix

Annotations

Annotations are a special type of metadata that can be added to your code to inform the compiler about relevant aspects of it. Annotations can be used during the declaration of classes, fields, methods, variables, and parameters. One interesting aspect of annotations is that they remain visible inside classes, indicating whether a method is an override to a different one from a parent class, for example.

Annotations are declared using the @ symbol followed by the annotation's name. There are some built-in annotations, but it is also possible to declare your own. At this point, it is important to focus on some of the built-in ones, as it will help you to understand some of the concepts presented so far in this chapter

The most relevant built-in annotations are @Override, @Deprecated, and @SuppressWarnings. These three commands inform the compiler about different aspects of the code or the process of producing it.

@Override is used to indicate that a method...

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