Top 8 Recommended Kotlin Self-Study Materials! [November 2024]

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1. Day 1 - Setting Everything Up
2. What you will learn in this course and how is it structured
3. Thanks a lot for taking the course
4. How to get most out of this course
5. Kotlin Updates and Why you should Not Worry
6. WARNING Android and Kotlin Updates and how they affect this course
7. DOWNLOAD LINK for Android Studio!
8. Day 1 - Downloading Android Studio
9. Day 1 Installing Android Studio
10. Install Android Studio on Linux
11. Day 1 - Setting up our First Project
12. Day 1 - Overview of the Android Studio Interface
13. Day 1 - Understanding Gradle
14. Day 1 - Changing the Scaling in Android Studio
15. Day 1 - Setting up our Emulator
16. Day 1 - Tip of the Day
17. Day 1 - Changing our code for the first time
18. Day 1 - Understanding Preview
19. Day 1 - Imports and Packages
20. Day 1 - Understanding the MainActivity OnCreate and Composable
21. Let's test your initial understanding and see if you are ready for the next day!
22. Day 1 - Finishing Day 1
23. Day 2 - Rock Paper Scissors and Kotlin Basics
24. Day 2 - Welcome to Day 2
25. Day 2 - Overview of what Rock Paper Scissors is build of
26. Day 2 - Overview of what variables are
27. Day 2 - Int data type
28. Day 2 - Running Hello World
29. Day 2 - Val vs Var and print ints on the console
30. Coding Exercise - Understanding Variable Types and Printing in Kotlin
31. Day 2 - Int, Long, Short, Byte and specifying the type manually
32. Day 2 - Float and Double
33. Coding Exercise - Demonstrate the use of floating point data types in Kotlin
34. Day 2 - Unsigned Integers
35. Day 2 - Booleans true false negation
36. Coding Exercise - Understanding Booleans in Kotlin
37. Day 2 - Char, Unicode and Backslash escape character
38. Day 2 - Strings
39. Day 2 - If Else Statements
40. Day 2 - Readln and toInt to convert strings into int variables
41. Day 2 - Else if and the in keyword
42. Coding Exercise - Exploring "if-else if-else" in Kotlin
43. Day 2 - Rock Paper Scissors Part 1 - Getting The Computers choice
44. Day 2 - Rock Paper Scissors Part 2 - Finding out the winner
45. Day 2 - Rock Paper Scissors Part 3 - Presenting the Winner
46. Day 2 - While loops with counters
47. Day 2 - While loops with user input
48. Coding Exercise -String to Integer Conversion and Basic Input Handling in Kotlin
49. Coding Exercise - Validate Player Input in Rock-Paper-Scissors Game
50. Day 2 - Finishing Day 2
51. Summary of Day 2
52. Day 3 - Functions, Objects and Coffee Machines
53. Day 3 - Welcome to Day 3
54. Day 3 - Amy and her Coffee Function
55. Day 3 - Adding Sugar - Functions with Parameters
56. Sugar Spoon Grammar
57. Day 3 - Quiz Challenge Solution - 1 Spoon 2 Spoons
58. Coding Exercise - Enhancing the Coffee Machine in Kotlin
59. Day 3 - Quiz Challenge Solution - Who is the coffee for
60. Day 3 - BONUS Quiz Challenge Solution - Who is the coffee for with user input
61. Day 3 - Functions that return something
62. Coding Exercise - User Input Arithmetic in Kotlin
63. Day 3 - Quiz Challenge Solution - Get User Input to Add two numbers
64. Day 3 - More about Return types
65. Day 3 - Limitations of Output - Return Types
66. Day 3 - Classes Story Time
67. Day 3 - Creating our First Class and Object
68. Day 3 - Understanding Constructors and Default Values
69. Coding Exercise -Implementing a Kotlin Class with Constructors and Default Value
70. Day 3 - Accessing and Changing Properties
71. Day 3 - Data Classes and Coffee
72. Day 3 - Finishing Day 3
73. Summary of Day 3
74. Day 4 - Lists and Objects
75. Day 4 - Welcome to Day 4
76. Day 4 - Multiline Comments
77. Day 4 - Listof and MutableListOf
78. Day 4 - Index in Lists
79. Day 4 - Modifying specific items in a List
80. Day 4 - Set Method on Lists
81. Day 4 - Contains Method - Check if item is in the list
82. Coding Exercise - List Manipulation Practice in Kotlin
83. Day 4 - For Loops with Lists
84. Day 4 - Getting the Index in a for loop
85. Coding Exercise - Looping Through Lists in Kotlin
86. Day 4 - BankAccountApp - Private Keyword and Defining List Type
87. Day 4 - BankAccountApp - Implementing the functionality
88. Coding Exercise - Enhancing the BankAccount Class in Kotlin
89. Day 4 - Finishing Day 4
90. Summary of Day 4
91. Day 5 - Our First App - Unit Converter
92. Day 5 - Welcome to Day 5
93. Day 5 - XML and Jetpack Compose
94. Day 5 - Creating a Project and Understanding the Code with our New Knowledge
95. Day 5 - Creating our own Composables and Understanding Column
96. Day 5 - OutlinedTextField and Anonymous Functions
97. Day 5 - Adding a Preview
98. Coding Exercise - Implementing and Previewing Composables in Jetpack Compose
99. Day 5 - Button, onClick and Toast
100. Day 5 - Box, Icons and DropDownMenus
101. Day 5 - Modifier, VerticalArrangement and HorizontalAlignment
102. Day 5 - Spacer vs Padding
103. Coding Exercise - Exploring Spacing: Padding vs Spacer in Jetpack Compose
104. Day 5 - Adding DropdownMenus and DropDownMenuItems
105. Day 5 - Finishing Day 5
106. Summary of Day 5
107. Day 6 - Unit Converter Part 2 and Understanding State
108. Welcome to Day 6
109. Day 6 - State - Recomposition - Remember and MutableState
110. Day 6 - Captains Remember States and Treasures
111. Coding Exercise: Enhancing the Captain Game with Additional Features
112. Day 6 - Challenge Solution - Storm or Treasure
113. Day 6 - Understanding the by keyword
114. Day 6 - Implementing State to our OutlinedTextField
115. Day 6 - Implementing iExpanded for DropdownMenu and collapse it
116. Day 6 - Converting and Finishing the DropDownMenu Input
117. Day 6 - Taking Care of the right output and Bug fixing
118. Day 6 - Changing the Font of our Text
119. End of Day 6
120. Summary of Day 6
121. DOWNLOAD SOURCE - UNIT CONVERTER
122. Day 7 - Shopping List App - Learning Loads of UI Features
123. Welcome to Day 7
124. Day 7 - The Shopping List App
125. Day 7 - Starting with the Shopping List UI by adding a button
126. Day 7 - Lucy's Infinite Bookshelf and Jamies LazyColumn
127. Day 7 - Adding the LazyColumn and the Data Class
128. Day 7 - Moving our ShoppingListApp Code into a separate file
129. Day 7 - Understanding and setting up the AlertDialog
130. Day 7 - Modifying our AlertDialog and Understanding that there
131. Day 7 - Finishing our AlertDialog and saving the Shoppinglist item
132. Day 7 - Setting up how a listitem should look like
133. Day 7 - A little more on Lambda expressions
134. Day 7 - Finishing our ShoppingListItem Composable using IconButtons
135. Day 7 - ShoppingItemEditor
136. Day 7 - Map Keyword
137. Day 7 - Copy Method
138. Day 7 - let and nullable
139. Day 7 - Finalizing the App
140. Understanding the Shopping List App Composable Structure
141. Day 7 - Finishing Day 7
142. Summary of Day 7
143. DOWNLOAD SOURCE - SHOPPING LIST APP
144. Day 8 - MVVM - Model View ViewModel - Architecture - Counter App Part 2
145. Welcome to Day 8
146. Day 8 - Kingdom of Appdom and The Royal Orchestra MVVM
147. Coding Exercise - Implement a Counter App using ViewModel in Kotlin
148. Day 8 - Counter App - Rotating Phone and Losing State
149. Day 8 - Converting Counter App with MVVM
150. Day 8 - Functions that didn't exist and could be called
151. Day 8 - Inheritance 2 - Override and Super Keywords
152. Day 8 - Interfaces - learning from multiple sources
153. Day 8 - Why Interfaces
154. Day 8 - Setting up the Model and the Repository for MVVM
155. Day 8 - Why MVVM and Why Repository
156. Day 8 - Finishing Day 8
157. Summary of Day 8
158. Day 9 - JSON, Retrofit, HTTP Requests and Restful APIs - Recipe App
159. Welcome to Day 9
160. Day 9 - The Scroll of DataVille - JSON Analogy
161. Day 9 - JSON - what it really stands for
162. Day 9 - Understanding the Structure of JSON
163. Understanding JSON and Data Classes in Kotlin
164. Day 9 - TheMealDB and how we will use it
165. Day 9 - Adding Dependencies for ViewModel, Network Calls JSON
166. Day 9 - Setting up our Categories Data Classes
167. Day 9-Using Retrofit, the Suspend Key and Coroutines to get Access to Categories
168. Day 9 - Try And Catch And Finally
169. Day 9 - Setting up Our MainViewModel and Fetching Data
170. Day 9 - Preparing our RecipeScreen
171. Day 9 - How each Category Item should look like
172. Day 9 - Adding Internet Permission and Running the App
173. Day 9 - Going through the whole flow of our application
174. Day 9 - Finishing Day 9
175. Summary of Day 9
176. DOWNLOAD SOURCE - MY RECIPE APP
177. Day 10 - Navigation in Android
178. Welcome to Day 10
179. Day 10 - Setting up First Screen for Navigation
180. Day 10 - Setting up The Second Screen for Navigation
181. Day 10 - NavHost NavController and Navigating
182. Coding Exercise - Add a 3rd Screen to navigate to and do so
183. Day 10 - Passing Variables from One Screen To Another
184. Coding Exercise - Pass Age as well
185. Day 10 - Setting up the CategoryDetailScreen for our Recipe App
186. Day 10 - Preparing our UI for Navigation
187. Day 10 - Setting up the Routes with a Sealed Class
188. Day 10 - Implementing the Navigation and Passing Objects
189. Day 10 - Serialization and Deserialization with Parcelable
190. Day 10 - Finishing Day 10
191. Summary of Day 10
192. DOWNLOAD SOURCE - DAY 10 - NAVIGATION SAMPLE AND MYRECIPEAPP
193. Day 11 - Location App
194. Welcome to Day 11
195. Day 11 - Adding Permissions for Coarse and Fine Location in the AndroidManifest
196. Day 11 - Checking if we have access to the location permissions
197. Day 11 - Story about Context
198. Day 11 - RememberLauncherForActivityResult - Starting the Permission request
199. User Interface & Location Permissions
200. Day 11 - Requesting for Permission and Seeing the Popup

Build a Mobile App for Android and iOS with 100% shared code for business logic as well as UI! That’s right. With the help of Compose Multiplatform framework, you will be able to fully develop an app, for both platforms using single programming language, Kotlin.

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You’re starting this journey by introducing with some important concepts related to Kotlin Multiplatform development, requirements and other steps to prepare your environment.

After that we’re immediately starting with the project. The app itself is a simple Currency app that fetches a data from a third-party API and caches that data locally. The app will be able to work even without an internet connection. You’re going to work with both local and a remote data sources.

Both light/dark themes are supported.

New material 3 components.

Custom theming.

Custom UI components.

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So what are you waiting for, it’s time to sharpen your skills and learn the right stuff.

1. Introduction
2. Introduction
3. Introducing with KMP
4. Source Sets and Expect/Actual Mechanism
5. KMP vs Compose Multiplatform
6. Requirements
7. Choosing the right IDE
8. Preparing the Environment
9. Project Setup
10. Project Source Code
11. Generate a Project Template
12. Project Structure Overview
13. Choosing a Third-party API
14. Adding dependencies
15. Choosing a Theme/Colors
16. Let's Build an App
17. Model an API Response
18. Send a GET Request
19. Persist a Timestamp value
20. Filter the fetched Data from an API
21. HomeScreen Header
22. Create RatesStatus
23. Create CurrencyInputs
24. Create AmountInput
25. Implement a Local Cache
26. Save and Read Source/Target Currencies
27. Implement & Animate Switch Currencies Button
28. Animate Source/Target CurrencyView
29. Currency Picker
30. Create CurrencyPickerDialog
31. Select CurrencyType & Persist Selected Currency Code
32. HomeScreen Body
33. Create and Implement a HomeBody
34. Add a Custom Font
35. Update System Bar Colors
36. Course Updates
37. #1 Fix an Exception in iOS app with Koin injection

Are you a Java developer wondering if you need to learn Kotlin?

Maybe you are an experienced Java developer who wants to learn Kotlin quickly, to be prepared for future project work.

Perhaps instead, you're an Android app developer who knows Java well, but you want to be able to move forward with Kotlin for new Android development work.

Well, with Google's recent focus on Kotlin for Android app development, this language has been launched into the mainstream, and you can be sure you will be seeing a lot more about it. It's also highly likely that you will be working with Kotlin in your Java projects in the near future.

Because Kotlin works anywhere Java works, and can even be called from Java code (and vice-versa), this brings with it a massive opportunity for Java developers. Being able to work with both Java and Kotlin is going to give you a massive advantage over other programmers.

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Sarah Ettritch, your course instructor, is an experienced Java and Kotlin developer, with many years of software development experience. She is uniquely qualified to teach you how to use this powerful and exciting language.

While you won't learn Android app development in this course, you will learn Kotlin, and also the key differences between Kotlin and Java.

There is an entire section dedicated to Java interoperability, which is vital for all Java developers to learn.

In addition, the Kotlin syntax is explored in detail.

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1. Introduction to the Course
2. Introduction From Tim Buchalka
3. Introduction to the course
4. JDK8 Install Windows
5. JDK8 Install Mac
6. JDK8 Install Linux
7. Intellij Windows Install and Configure
8. Intellij Mac Install and Configure
9. Intellij Linux Install and Configure
10. IntelliJ Kotlin Settings
11. Introduction to Kotlin
12. Introduction to Section 2
13. Introduction to Kotlin
14. The Java Text Adventure Game
15. The Converted Kotlin Text Adventure Game
16. IDEA's Java to Kotlin Converter
17. Basic Differences Between Kotlin and Java
18. Introduction to Section 3
19. Hello World from Kotlin
20. The Kotlin Standard Library
21. Variable Declarations in Kotlin
22. How to Create Type Aliases in Kotlin
23. Quick Differences Between Kotlin and Java
24. How Kotlin handles equality differently from Java
25. Bit Operators and Smart Casting in Kotlin
26. String Templates in Kotlin
27. Raw Strings in Kotlin
28. The Kotlin REPL
29. Kotlin Challenges (Round One)
30. Data Types and Null Reference Handling
31. Introduction to Section 4
32. The Builtin Dataypes in Kotlin
33. Arrays in Kotlin
34. Null References in Kotlin - Part One
35. Null References in Kotlin - Part Two
36. Arrays and Null References
37. Kotlin Challenges (Round Two)
38. OO and Kotlin: Classes, Functions, Inheritance
39. Introduction to Section 5
40. Kotlin's Access Modifiers
41. Declaring Classes and Using Constructors in Kotlin
42. Properties and Backing Fields in Kotlin
43. Constants and Data Classes
44. Kotlin Function Basics
45. Extension Functions
46. Inline Functions
47. Inheritance in Kotlin - Part One
48. Inheritance in Kotlin - Part Two
49. Interfaces in Kotlin
50. Singletons in Kotlin
51. Companion Objects in Kotlin
52. Anonymous Objects in Kotlin
53. Enums in Kotlin
54. Imports in Kotlin
55. The Internal Access Modifier
56. Kotlin Challenges (Round Three, Part 1)
57. Kotlin Challenges (Round Three, Part 2)
58. Loops, and the If, When, and Try/Catch Expressions
59. Introduction to Section 6
60. The For Loop
61. The If Expression
62. The When Expression
63. The Try/Catch Expression
64. Kotlin Challenges (Round Four)
65. Lambda Expressions, Collections, and Generics
66. Introduction to Section 7
67. Lambda Expression Basics
68. Lambdas With Receivers
69. Lists
70. Kotlin Collections Functions
71. Maps and Destructuring Declarations
72. Sets in Kotlin
73. More Collections Functions in Kotlin
74. Sequences in Kotlin
75. Generics in Kotlin
76. Generics: Functions and Erasure
77. Generics: Reified Parameters in Kotlin
78. Generics: Covariance
79. Generics: Contravariance
80. Generics: Use-Site Variance
81. Kotlin Challenges (Round Five)
82. File I/O
83. Introduction to Section 8
84. Reading Text Files
85. Reading Binary Files and Try with Resources
86. Walking the File Tree
87. Java Interoperability
88. Introduction to Section 9
89. Nullability when using Java from Kotlin
90. More about calling Java from Kotlin
91. Calling Kotlin Functions from Java
92. Annotations when calling Kotlin from Java
93. Kotlin Challenges (Round Six)
94. Course Wrap Up
95. Introduction to Section 10
96. Revisit the Converted Kotlin Text Adventure
97. Kotlin for Java Developers Wrap Up
98. Tell Us What Content You Want Us To Add!
99. Extra Information - Source code, and other stuff
100. Source code
101. Bonus Lecture and Information
102. Course Slides

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Requirements:

PC

Java JDK (We will Download & Install it through the course)

Android Studio ( We will Download & install it through the course)

Programs we will use:

Android Studio ( Installation Process included in the course)

This is what you’ll learn in the course:

· Develop apps for the very latest version of Android 7 Nougat that also work on older Android devices running older versions of the Android operating system.

· Download, install and configure the necessary (free) software.

· Create your first app.

· Build a range of apps demonstrating key aspects of the Android framework.

· Test your apps on emulators or a real Android phone or tablet.

· You’ll learn Java programming because Android app development requires knowledge of Java. Included are Java tutorial videos that will get you up to speed fast.

· Ensure your apps work with current and older Android versions on phones and tablets.

· Use Android studio, the newest version of Google's premier Android tool.

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· Learn MVVM android architecture pattern.

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·  Build MVVM + Retrofit Apps

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1. Course Introduction
2. Java or Kotlin??
3. Download Course Assets and Source Codes
4. Take your coding journey to the next level
5. Introduction to Android Studio
6. Installing Android Studio with Latest SDK
7. Creating Emulators - Android Virtual Device (AVD)
8. Creating Your First App
9. Android Studio Structure
10. Changing Android Studio Theme
11. Android Studio User Interface
12. The Editors
13. The Editors of Android Studio
14. Project Structure
15. Gradle
16. Solving Android Studio Errors - [Refer to this Section if you have any Error]
17. [Fix] - Duplicate Class Found Error
18. [Fix] - Dependency Requires Libraries Error
19. Java Basic Course
20. Running Java Programs in Android Studio
21. Comments
22. Main Method Syntax
23. Java Output
24. Variables
25. Data Types
26. Numbers
27. Your First Variable
28. Decimals
29. Boolean
30. Playing with Booleans
31. Characters
32. Type Casting
33. Operators
34. Understanding Operators
35. Strings
36. Using Strings
37. Conditional Statements
38. Understanding Conditional Statements
39. Switch Statement
40. Days of a Month
41. While Loop
42. For Loop
43. Making Use of Loops
44. Break & Continue keywords
45. Arrays
46. For Each Loop
47. Multidimensional Arrays
48. Java Basics Test
49. Java Object Oriented Programming
50. Methods
51. Returning Type of Methods
52. Methods Parameters
53. Method Overloading
54. Functions
55. Area of Rectangle
56. Finding Max Value of an Array
57. Classes
58. Objects
59. Constructor
60. Modifiers
61. Encapsulation
62. Inheritance
63. "this" Keyword
64. Method Overriding
65. Polymorphism
66. Abstraction
67. Interfaces
68. Abstraction Example - Using Interfaces
69. Java Exercises - 10 Coding Exercises
70. Exercise 1
71. Exercise 2
72. Exercise 3
73. Exercise 4
74. Exercise 5
75. Exercise 6
76. Exercise 7
77. Exercise 8
78. Exercise 9
79. Exercise 10
80. Views & Widgets
81. Views & View Group
82. UI Editing in Android Studio
83. View's Attributes
84. TextView - Formatting Texts
85. Declaring & Initialising Views
86. EditText
87. Buttons
88. Listeners in Android
89. ImageView - Displaying Images
90. The Greetings App
91. The Counter App
92. Unit Converter App
93. Designing the Layout
94. Adding Functionalities to the App
95. Layouts
96. What are Layouts?
97. Types of Layouts
98. Linear Layout
99. Relative Layout
100. Constraint Layout
101. Constraint Layout in Android Studio
102. More About Constraint Layout
103. App Components
104. App Life Cycle
105. Explicit Intent
106. Implicit Intent
107. The Manifest
108. Lucky Number App
109. Lucky Number App Promo
110. Main Activity Layout
111. Second Activity Layout
112. Passing Data Between Activities
113. Generating Random Numbers
114. Sharing the Results
115. App Resources
116. Drawables & Shapes
117. Mipmap Folder - Changing the App Icon
118. Values Folder - Strings.xml, Themes.xml & Colors.xml
119. Menu - Creating Menus
120. Font
121. More Widgets
122. CheckBox
123. Radio Button
124. Spinner
125. Time Picker
126. Date Picker
127. Progress Bar
128. French Teacher App
129. App Overview
130. Designing Layout
131. MediaPlayer in Android - Playing the French Sounds
132. Handling Multiple Buttons' Click
133. Running the App
134. Adapters in Android
135. What's an Adapter?
136. Custom Adapters
137. Methods of Adapters
138. View Holder Class
139. Displaying Custom ListViews
140. Planets App - Mastering ListView & Adapters
141. App Promo - What we'll build together?
142. Designing Layout
143. Model Class
144. Creating Custom Adapters
145. View Holder Class
146. Convert View
147. SetTag() & GetTag() Methods
148. Using Arraylists in ListViews
149. Handling Click Events on ListView
150. Volume Calculator - Mastering Adapters & GridView
151. What we'll build together?
152. Creating GridView Layouts
153. Model Class - Shape
154. Custom GridView Adapter
155. GetView() Method
156. Layout Inflater
157. Main Activity
158. Calculating Shape Volume
159. Your Turn
160. RecyclerView - The Grocery App
161. Introduction to RecyclerView
162. Designing Layouts
163. Model Class
164. Custom Adapter
165. View Holder
166. Adapter Methods
167. Linear Layout Manager
168. Handling Click Events on RecyclerView Items
169. CardView - The Sports App
170. What's CardView in Android?
171. App Promo
172. Designing CardView Layout
173. Model Class
174. Custom Adapter for RecyclerView
175. View Holder Class
176. Testing the App
177. Coding Challenge - It's Your Turn
178. Android Components: Services, Broadcast Receivers & Content Providers
179. What are Android Components
180. Services & Their Life Cycles
181. The Services App - Understanding Background Services
182. Running and Stopping Services
183. Broadcast Receivers
184. Intent Filter in Broadcast Receivers
185. Fragments in Android
186. What are Fragments in Android?
187. Fragments Life Cycle
188. Building Fragments App
189. Frame Layout
190. Fragment Transaction
191. View Pager with Fragments & Tab Layout App
192. What's ViewPager in Android?
193. Fragment State Adapter
194. View Pager 2 App
195. Tab Layout with View Pager
196. Android Jetpack - Introduction
197. What's Jetpack?
198. Data Binding in Android
199. What's Data Binding?
200. Data Binding App

This Kotlin programming course is designed to equip participants with a solid foundation and advanced skills in Kotlin, a modern and versatile programming language. Whether you're new to programming or an experienced developer looking to enhance your expertise, this course offers comprehensive coverage of Kotlin's features and applications.

The course begins with an introduction to Kotlin's syntax, data types, variables, and basic operations, ensuring a strong grasp of fundamental concepts. Participants will then delve into object-oriented programming (OOP) principles such as classes, objects, inheritance, and polymorphism, essential for structuring robust and scalable applications.

Functional programming paradigms in Kotlin, including higher-order functions, lambda expressions, and immutability, will be explored to leverage Kotlin's expressive capabilities. Participants will also learn how Kotlin facilitates concurrent programming through coroutines and asynchronous programming techniques, vital for developing responsive and efficient applications.

Throughout the course, emphasis is placed on practical application through hands-on exercises and projects. Participants will gain proficiency in using Kotlin for Android app development, backend systems, and other software applications. Best practices, design patterns, and optimization techniques will also be covered to ensure participants can write clean, efficient, and maintainable Kotlin code.

By the end of this course, participants will be well-equipped to confidently utilize Kotlin for a wide range of programming tasks, making them valuable contributors to modern software development teams.

1. Introduction
2. Software Requirements
3. Kotlin Variables
4. Kotlin Data Types
5. Kotlin Strings
6. Kotlin Operators
7. Kotlin Control Flow
8. kotlin if else Statement
9. Kotlin When Statement
10. Kotlin Loops
11. Kotlin Arrays and Functions
12. Kotlin Arrays
13. Kotlin Functions
14. Kotlin Scope Functions
15. OOPs
16. Classes and Objects in Kotlin
17. Kotlin Constructors
18. Kotlin Interface
19. Kotlin Abstract Class
20. Kotlin Inheritance
21. Kotlin Collections
22. Kotlin Collection Part 1
23. Kotlin Collection Part 2
24. Nullability in Kotlin
25. Safe call Operator, Elvis Operator, Non Null Assertion