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Introduction to Programming

You're reading from   Introduction to Programming Learn to program in Java with data structures, algorithms, and logic

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Product type Paperback
Published in Jun 2018
Publisher Packt
ISBN-13 9781788839129
Length 722 pages
Edition 1st Edition
Languages
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Author (1):
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Nick Samoylov Nick Samoylov
Author Profile Icon Nick Samoylov
Nick Samoylov
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Toc

Table of Contents (21) Chapters Close

Preface 1. Java Virtual Machine (JVM) on Your Computer FREE CHAPTER 2. Java Language Basics 3. Your Development Environment Setup 4. Your First Java Project 5. Java Language Elements and Types 6. Interfaces, Classes, and Object Construction 7. Packages and Accessibility (Visibility) 8. Object-Oriented Design (OOD) Principles 9. Operators, Expressions, and Statements 10. Control Flow Statements 11. JVM Processes and Garbage Collection 12. Java Standard and External Libraries 13. Java Collections 14. Managing Collections and Arrays 15. Managing Objects, Strings, Time, and Random Numbers 16. Database Programming 17. Lambda Expressions and Functional Programming 18. Streams and Pipelines 19. Reactive Systems 20. Other Books You May Enjoy

Managing objects

You may not need to manage arrays and may even not need to manage collections (for some time, at least), but you cannot avoid managing objects, which means that the classes described in this section you are probably going to use every day.

Although the java.util.Objects class was added to the Java Standard Libraries in 2011 (with the Java 7 release), while the ObjectUtils class has existed in the Apache Commons libraries since 2002, their use grew slowly. This may be partially explained by the small number of methods they had originally—only six in ObjectUtils in 2003 and only nine in Objects in 2011. However, they were very helpful methods that could make the code more readable and robust—less prone to errors. So, why these classes were not used more often from the very beginning remains a mystery. We hope that you start using them immediately with...

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