📱Kotlin for Beginners with Coroutines, OOP and a Real Project

What Is Kotlin and Why Companies Switched to It

18 min

Install Kotlin and Set Up IntelliJ IDEA

16 min

Kotlin Playground: Run Code Without Installing Anything

15 min

Write Your First Kotlin Program (main function explained)

12 min

Kotlin REPL: Test Code Line by Line

14 min

Reading Input From the User in Kotlin

17 min

Kotlin val vs var Explained

14 min

Kotlin Data Types and Type Inference

19 min

Kotlin Strings, Templates and String Functions

19 min

Type Conversion and Type Checking with is

17 min

Type Casting in Kotlin: as vs as?

15 min

Kotlin Null Safety: Nullable Types Explained

17 min

Safe Call ?., Elvis ?: and !! Operator

19 min

Kotlin Operators: Arithmetic, Comparison and Logical

12 min

If / else in Kotlin (it returns a value!)

15 min

Kotlin when Expression Tutorial

14 min

Kotlin Loops: for, while and do-while

17 min

Break, continue and Labels in Kotlin

14 min

Kotlin Functions: Parameters and Return Types

17 min

Default and Named Arguments in Kotlin

14 min

Single Expression Functions and vararg

18 min

Kotlin Extension Functions Explained

19 min

Kotlin Classes, Objects and Constructors

15 min

Properties, Custom Getters and Setters

19 min

Visibility Modifiers in Kotlin

13 min

Inheritance and the open Keyword

18 min

Abstract Classes vs Interfaces in Kotlin

16 min

Kotlin Data Classes Explained

19 min

Enum Classes and Sealed Classes in Kotlin

15 min

Object Declarations and Companion Objects

16 min

Kotlin Arrays, Lists, Sets and Maps

13 min

Mutable vs Immutable Collections in Kotlin

13 min

Kotlin Lambda Expressions for Beginners

14 min

Higher Order Functions and Function References

15 min

filter, map, sortedBy and groupBy in Kotlin

14 min

Kotlin Scope Functions: let, run, apply, also, with

19 min

Kotlin Generics and Variance Basics

14 min

Exception Handling: try, catch, finally and Custom Exceptions

12 min

What Are Kotlin Coroutines and Why They Beat Threads

14 min

Suspend Functions, launch and runBlocking

19 min

async, await and Dispatchers Explained

14 min

Kotlin Flow Basics for Beginners

19 min

Read and Write Files in Kotlin

19 min

JSON Serialization with kotlinx.serialization

13 min

Unit Testing Kotlin Code with JUnit

18 min

Capstone Build: Expense Tracker CLI From Start to Finish

12 min