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Java Basics
course content

Course Content

Java Basics

Java Basics

1. Getting Started
Backend DevelopmentRole of Java in the Backend Java Advantages Memory Types In Java Java's SyntaxYour First ProgramComments
2. Basic Types, Operations
Primitive Data TypesChallenge: Primitive TypesMathematical Operations on charMathematical Operations in JavaIf-Else StatementSwitch-Case StatementChallenge: Weekday Switch
3. Loops
Introduction to LoopsWhile-LoopDo-While LoopChallenge: Building a Server Retry MechanismFor-Loop Increment and DecrementInfinite LoopChallenge: Filtering Numbers in a Loop
4. Arrays
What is Array?Using Loops with ArraysIndex Out Of BoundsTwo-Dimentional ArrayIteration In Two-Dimensional ArrayFor-Each Loop
5. String
What Is String? Basic Methods In StringPractical Applications of String MethodsChallenge: Filter Failure MessagesNullPointerException StringBuilderString Pool, Method Equals() Summary

book
Infinite Loop

What is an infinite loop?

An infinite loop is a loop that continues executing indefinitely without a condition that would cause it to terminate. This can result in your program becoming unresponsive or consuming excessive system resources.

Here's an example of an infinite loop in Java:

java

Main

copy

              
123

            
while (true) {
    // Code to be executed indefinitely
}

To avoid infinite loops:

Ensure a proper termination condition: Double-check that your loop has a well-defined termination condition. The condition should eventually evaluate as false, allowing the loop to exit;

Example:

java

Main

copy

              
12345

            
int count = 0;
while (count < 10) {
    // Code to be executed
    count++;
}

Utilize loop control statements such as break or return to explicitly exit the loop when a specific condition is met.

Example:

java

Main

copy

              
123456

            
while (true) {
    // Code to be executed
    if (condition) {
        break; // Exit the loop
    }
}

1. Which loop construct in Java is best suited when the number of iterations is known?

2. Which keyword is used to exit a loop prematurely?

Which loop construct in Java is best suited when the number of iterations is known?

Which loop construct in Java is best suited when the number of iterations is known?

Select the correct answer

Which keyword is used to exit a loop prematurely?

Which keyword is used to exit a loop prematurely?

Select the correct answer

Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 7
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