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Java Fundamentals

You're reading from   Java Fundamentals A fast-paced and pragmatic introduction to one of the world's most popular programming languages

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Product type Paperback
Published in Mar 2019
Publisher
ISBN-13 9781789801736
Length 408 pages
Edition 1st Edition
Languages
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Authors (5):
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Miles Obare Miles Obare
Author Profile Icon Miles Obare
Miles Obare
Basheer Ahamed Fazal Basheer Ahamed Fazal
Author Profile Icon Basheer Ahamed Fazal
Basheer Ahamed Fazal
Rogério Theodoro de Brito Rogério Theodoro de Brito
Author Profile Icon Rogério Theodoro de Brito
Rogério Theodoro de Brito
Gazihan Alankus Gazihan Alankus
Author Profile Icon Gazihan Alankus
Gazihan Alankus
Vinicius Isola Vinicius Isola
Author Profile Icon Vinicius Isola
Vinicius Isola
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Table of Contents (12) Chapters Close

Java Fundamentals
Preface
1. Introduction to Java FREE CHAPTER 2. Variables, Data Types, and Operators 3. Control Flow 4. Object-Oriented Programming 5. OOP in Depth 6. Data Structures, Arrays, and Strings 7. The Java Collections Framework and Generics 8. Advanced Data Structures in Java 9. Exception Handling Appendix

Looping Constructs


Looping constructs are used to perform a certain operation a given number of times as long as a condition is being met. They are commonly used to perform a specific operation on the items of a list. An example is when we want to find the summation of all the numbers from 1 to 100. Java supports the following looping constructs:

  • for loops

  • for each loops

  • while loops

  • do while loops

for Loops

The syntax of the for loop is as follows:

for( initialization ; condition ; expression) {
    //statements
}

The initialization statements are executed when the for loop starts executing. It can be more than one expression, all separated by commas. The expressions must all be of the same type:

for( int i  = 0, j = 0; i <= 9; i++)

The condition section of the for loop must evaluate to true or false. If there is no expression, the condition defaults to true.

The expression part is executed after each iteration of the statements, as long as the condition is true. You can have more than one expression...

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