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Learn Java with Projects

You're reading from   Learn Java with Projects A concise practical guide to learning everything a Java professional really needs to know

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Product type Paperback
Published in Nov 2023
Publisher Packt
ISBN-13 9781837637188
Length 598 pages
Edition 1st Edition
Languages
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Authors (2):
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Maaike van Putten Maaike van Putten
Author Profile Icon Maaike van Putten
Maaike van Putten
Dr. Seán Kennedy Dr. Seán Kennedy
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Dr. Seán Kennedy
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Toc

Table of Contents (22) Chapters Close

Preface 1. Part 1: Java Fundamentals
2. Chapter 1: Getting Started with Java FREE CHAPTER 3. Chapter 2: Variables and Primitive Data Types 4. Chapter 3: Operators and Casting 5. Chapter 4: Conditional Statements 6. Chapter 5: Understanding Iteration 7. Chapter 6: Working with Arrays 8. Chapter 7: Methods 9. Part 2: Object-Oriented Programming
10. Chapter 8: Classes, Objects, and Enums 11. Chapter 9: Inheritance and Polymorphism 12. Chapter 10: Interfaces and Abstract Classes 13. Chapter 11: Dealing with Exceptions 14. Chapter 12: Java Core API 15. Part 3: Advanced Topics
16. Chapter 13: Generics and Collections 17. Chapter 14: Lambda Expressions 18. Chapter 15: Streams – Fundamentals 19. Chapter 16: Streams: Advanced Concepts 20. Chapter 17: Concurrency 21. Index

for loops

The for loop comes in two styles: the traditional for loop and the enhanced for loop. The enhanced for loop is also known as the for-each loop and is specifically designed to work with arrays and collections. We will start by examining the traditional for loop.

Traditional for loop

This type of for loop is extremely useful when you know how many iterations you wish to perform beforehand. Its syntax is detailed in Figure 5.8.

Figure 5.8 – The traditional for loop

Figure 5.8 – The traditional for loop

The code block in the preceding figure is optional. We could simply control one statement, such as System.out.println("Looping");, and omit {}. The for header is the section inside (). It consists of three parts, delimited by semi-colons:

  • Initialization section: This is where you initialize your loop control variables. The variables declared here have the scope of the loop block only. Traditionally, the variables declared here are named i, j, k, and so forth...
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