Kotlin Tutoial

• Introduction to Kotlin
• Kotlin Environment setup for Command Line
• Kotlin Environment setup with Intellij IDEA
• Hello World program in Kotlin

Basics

• Kotlin Data Types
• Kotlin Variables
• Kotlin Operators
• Kotlin Standard Input/Output
• Kotlin Type Conversion
• Kotlin Expression, Statement and Block

Control Flow

• Kotlin if-else expression
• Kotlin while loop
• Kotlin do-while loop
• Kotlin for loop
• Kotlin when expression
• Kotlin Unlabeled break
• Kotlin labeled break
• Kotlin unlabeled continue
• Kotlin labeled continue

Array & String

• Kotlin Array
• Kotlin String

Functions

• Kotlin functions
• Kotlin | Default and Named argument
• Kotlin Recursion
• Kotlin Tail Recursion
• Lambdas Expressions and Anonymous Functions
• Kotlin Inline functions
• Kotlin infix function notation
• Kotlin Higher-Order Functions

Collections

• Kotlin Collections
• Kotlin list : Arraylist
• Kotlin list : listOf()
• Kotlin Set : setOf()
• Kotlin mutableSetOf()
• Kotlin hashSetOf()
• Kotlin Map : mapOf()
• Kotlin Hashmap

OOPs Concept

• Kotlin Class and Objects
• Kotlin Nested class and Inner class
• Kotlin Setters and Getters
• Kotlin | Class Properties and Custom Accessors
• Kotlin Constructor
• Kotlin Visibility Modifiers
• Kotlin Inheritance
• Kotlin Interfaces
• Kotlin Data Classes
• Kotlin Sealed Classes
• Kotlin Abstract class
• Enum classes in Kotlin
• Kotlin extension function
• Kotlin generics

Exception Handling

• Kotlin Exception Handling | try, catch, throw and finally
• Kotlin Nested try block and multiple catch block

Null Safety

• Kotlin Null Safety
• Kotlin | Type Checking and Smart Casting
• Explicit type casting

Regex & Ranges

• Kotlin Regular Expression
• Kotlin Ranges

Java Interoperability

• Java Interoperability - Calling Kotlin from Java
• Java Interoperability - Calling Java from Kotlin

Miscellaneous

• Kotlin annotations
• Kotlin Reflection
• Kotlin Operator Overloading
• Destructuring Declarations in Kotlin
• Equality evaluation in Kotlin
• Comparator in Kotlin
• Triple in Kotlin
• Pair in Kotlin
• Kotlin | apply vs with

Android

• Kotlin Android Tutorial
• How to create project in Android Studio using Kotlin
• How to install Android Virtual Device(AVD)
• Android Animations in Kotlin
• Android Fade In/Out in Kotlin
• Android Menus
• Android progress notifications in Kotlin
• Android Project folder Structure

Kotlin Environment setup with Intellij IDEA

IntelliJ IDEA by JetBrains is one of the most popular IDEs for Kotlin development, and for a good reason: JetBrains is the company behind Kotlin. Setting up Kotlin with IntelliJ IDEA is a smooth process, as the IDE provides first-class support for the language.

Here's a step-by-step tutorial to set up a Kotlin environment using IntelliJ IDEA:

1. Installing IntelliJ IDEA:

For Windows, macOS, and Linux:

• Go to the official IntelliJ IDEA download page.
• Download the appropriate version for your OS. There are two versions available: Community (free) and Ultimate (paid). Kotlin support is available in both.
• Install IntelliJ IDEA by following the on-screen instructions after launching the installer.

2. Creating a New Kotlin Project:

1. Launch IntelliJ IDEA and select Create New Project from the welcome screen.
2. In the New Project window, select Kotlin from the left sidebar and JVM | IDEA from the project type. This will create a Kotlin/JVM project.
3. Specify the project name, location, and other details.
4. Choose the JDK version you have installed (1.8 or newer is recommended).
5. Click Finish to create the project.

3. Exploring the Project:

Once your project is created:

• src directory: This is where you'll place your Kotlin source files. You can create a new Kotlin file by right-clicking on the src directory, then New -> Kotlin File/Class.

• External Libraries: In the project sidebar, you will see this section, which will include the Kotlin Standard Library. This means the Kotlin runtime is already added to your project.

4. Writing and Running a Simple Kotlin Program:

1. Right-click on the src directory and create a new Kotlin file named HelloWorld.

2. In HelloWorld.kt, write the following code:

   fun main() {
       println("Hello, Kotlin in IntelliJ!")
   }
   

3. To run the program, right-click anywhere in the file editor and select Run 'HelloWorldKt'.

5. Adding Kotlin to an Existing Java Project:

If you have an existing Java project in IntelliJ IDEA and you want to introduce Kotlin:

1. Open the project in IntelliJ IDEA.
2. Go to File -> Project Structure.
3. In the opened window, go to Libraries, then click on the + button and select From Maven.
4. Search for org.jetbrains.kotlin:kotlin-stdlib and select the version you want to use (preferably the latest).
5. After adding it, you'll be able to use Kotlin in your Java project.

6. Using Kotlin Plugin:

IntelliJ IDEA comes with the Kotlin plugin pre-installed. However, if you need to update or configure:

1. Go to IntelliJ IDEA -> Preferences (on macOS) or File -> Settings (on Windows/Linux).
2. Navigate to Plugins.
3. Search for Kotlin and install/update/configure as needed.

Conclusion:

IntelliJ IDEA provides a seamless and integrated environment for Kotlin development. Its built-in tools and features, like code suggestions, debugging tools, and refactoring capabilities, make it a top choice for Kotlin developers. Whether you're starting a new project or adding Kotlin to an existing one, IntelliJ IDEA has got you covered.