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Welcome to HCL GUVI

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Kotlin Tutorial

Kotlin Tutorial

A practical handbook for learning Kotlin from scratch. This guide covers Kotlin fundamentals, concise syntax, null safety, object-oriented and functional programming concepts, and real-world application development. It helps learners write clean, safe, and expressive code for modern applications.

8 Modules

53 Lessons

English

1 Hr

Reading Plan

MODULE 1

Kotlin Basics

11 mins

Introduction to Kotlin

1 min

Kotlin Environment Setup

1 min

Kotlin First Program

1 min

Run Kotlin Program

1 min

Keywords and Identifiers

1 min

Variables and Constants

1 min

1 min

1 min

1 min

1 min

1 min

MODULE 2

Kotlin Control Flow

6 mins

Kotlin if else

1 min

Kotlin when Expression

1 min

Kotlin while Loop

1 min

Kotlin for Loop

1 min

Kotlin Range

1 min

Continue, Break & Repeat

1 min

MODULE 3

Kotlin Datatypes

2 mins

Kotlin String

1 min

Kotlin Array

1 min

MODULE 4

Kotlin Functions

6 mins

Kotlin User-defined Functions

1 min

Kotlin Recursive Functions

1 min

Kotlin Function Argument Types

1 min

Kotlin Lambda Expression

1 min

Kotlin Higher Order Functions

1 min

Kotlin Inline Keyword

1 min

MODULE 5

Kotlin OOP

14 mins

Kotlin Class and Objects

1 min

Kotlin Constructor

1 min

Kotlin Companion Object

1 min

Kotlin Getter and Setter

1 min

Kotlin Access Modifiers

1 min

Kotlin Inheritance

1 min

Kotlin Abstract Class

1 min

Kotlin Interface

1 min

Kotlin Nested and Inner class

1 min

1 min

1 min

1 min

1 min

Kotlin Extension Function

1 min

MODULE 6

Kotlin Exception Handling

6 mins

Kotlin Exception Handling

1 min

Kotlin try & catch

1 min

Kotlin Multiple Catch

1 min

Kotlin Nested try-catch

1 min

Kotlin finally Block

1 min

Kotlin throw Keyword

1 min

MODULE 7

Kotlin Collection

4 mins

1 min

1 min

1 min

1 min

MODULE 8

Kotlin Miscellaneous

4 mins

Kotlin File Handling

1 min

Kotlin Null Safety

1 min

Kotlin Regular Expression

1 min

Kotlin Operator Overloading

1 min

Contributors

Kotlin Tutorial

This handbook introduces Kotlin step by step, starting with basic syntax and language features. You’ll learn how Kotlin simplifies common programming tasks through concise syntax, strong type safety, and expressive constructs. The guide also touches on how Kotlin is used in Android and backend development.

Why This Handbook Matters

Kotlin is the preferred language for Android development and is widely used for backend and multiplatform applications. Learning Kotlin helps developers write safer code with fewer errors while staying productive and expressive.

Ideal Learners for This Handbook

This handbook is ideal for beginners starting programming, Java developers transitioning to Kotlin, and learners interested in Android or modern backend development. It’s also useful for anyone aiming to adopt a clean and modern programming language.

Prerequisites

This course is suitable for:

Basic understanding of programming concepts
Familiarity with variables, loops, and functions
Comfort using a text editor or IDE
Willingness to learn modern programming paradigms

Run & Test your Code with our very own IDE that supports 16 languages

Open IDE

8 Modules

53 Lessons

English

1 Hr

Contributors

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