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Level 1 Student Learning Lab Notebook: Kotlin Programming for Beginners

Learning Outcomes:

Learn to write KOTLIN Code at a Level 1 standard which demonstrates handling variables, if then, for and while loops, and output statements.

Introduction

Welcome to the Level 1 Student Learning Lab Notebook for Kotlin Programming. In this notebook, we will explore the basics of Kotlin programming, including variables, if-then statements, for and while loops, and output statements.

No prior programming knowledge is assumed, so this notebook is perfect for those who are new to programming or want to learn Kotlin from scratch.

Lesson 1: Kotlin Basics

What is Kotlin?

Kotlin is a modern, statically-typed programming language that runs on the Java Virtual Machine (JVM) and can be used to develop Android applications or any other Java-based software.

Kotlin is designed to be more expressive and less verbose than Java, making it easier to write and read code.

Setting Up the Environment

To start writing Kotlin code, you can download and install the IntelliJ IDEA (Community Edition) from JetBrains'

official website⁠

. Once installed, create a new Kotlin project and follow the setup instructions.

If you need help with setting up IntelliJ IDEA, for this lab you can work in an ONLINE IDE. Click the card below to access Kotlin Playground.

Kotlin Playground: Edit, Run, Share Kotlin Code Online Explore Kotlin and practice your coding skills on the Kotlin Playground! Simply type a snippet of code and click Run to try it on the fly. play.kotlinlang.org⁠

⁠

The simplest kotln program I can run in intelliJ

Here's the simplest Kotlin program that you can run in IntelliJ IDEA:

fun main() {

println("Hello, world!")

}

To create a new Kotlin project in IntelliJ IDEA, you can follow these general steps:

Open IntelliJ IDEA and select "Create New Project" from the welcome screen.

In the "New Project" dialog, select "Kotlin" from the list of available languages.

Choose the project type and settings that you want, and click "Finish".

In the project window, navigate to the "src" folder and open the "Main.kt" file.

Replace the contents of the file with the above code.

Run the program by clicking the green "Run" button in the toolbar or by pressing Shift+F10.

Learn more about running applications: https://www.jetbrains.com/help/idea/running-applications.html

You can find more detailed instructions on how to create and run your first Kotlin program in IntelliJ IDEA in the search results

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Lesson 2: Handling Variables

Variables are used to store and manipulate data in a program. In Kotlin, you declare a variable using the var keyword for mutable variables or val keyword for immutable (read-only) variables.

Here's an example:

kotlin

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val name = "John Doe"

var age = 30

In this example, name is an immutable variable, and age is a mutable variable. You cannot change the value of name, but you can change the value of age.

Lesson 3: If-Then Statements

If-then statements are used to execute code based on specific conditions. The basic syntax for an if-then statement in Kotlin is:

kotlin

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if (condition) {

// code to execute if the condition is true

} else {

// code to execute if the condition is false

}

Here's an example:

kotlin

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val age = 18

if (age >= 18) {

println("You are eligible to vote.")

} else {

println("You are not eligible to vote.")

}

In this example, we check if age is greater than or equal to 18. If it is, we print "You are eligible to vote." Otherwise, we print "You are not eligible to vote."

Lesson 4: For Loops

A for loop is used to iterate over a range of values or elements in a collection. The basic syntax for a for loop in Kotlin is:

kotlin

Copy code

Here's an example:

kotlin

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for (i in 1..5) {

println("Hello, Kotlin! $i")

}

In this example, we iterate over the range of values from 1 to 5 and print "Hello, Kotlin!" followed by the current value of i.

Lesson 5: While Loops

A while loop is used to execute a block of code repeatedly as long as a specified condition is true. The basic syntax for a while loop in Kotlin is:

kotlin

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while (condition) {

// code to execute while the condition is true

}

Here's an example:

kotlin

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var number = 1

while (number <= 5) {

println("Hello, Kotlin! $number")

number++

}

In this example, as long as the value of number is less than or equal to 5, we print "Hello, Kotlin!" followed by the current value of number and increment number by 1.

Lesson 6: Output Statements

To display output in a Kotlin program, you can use the println() function. This function prints the specified text and a newline character.

Here's an example:

kotlin

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println("Hello, Kotlin!")

In this example, we print "Hello, Kotlin!" followed by a newline character.

Conclusion

Congratulations! You have learned the basics of Kotlin programming, including handling variables, if-then statements, for and while loops, and output statements. Now you can start exploring more advanced Kotlin concepts and build your own Kotlin applications. Happy coding!

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