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Kotlin Programming Tutorial

Kotlin is a modern, statically typed programming language used for Android, web, and backend development.

This tutorial covers all major Kotlin concepts from beginner to advanced level.

Introduction to Kotlin

  • What is Kotlin?
  • History of Kotlin
  • Features of Kotlin
  • Kotlin vs Java
  • Setting Up Kotlin Environment

Kotlin Basics

  • Basic Syntax
  • Hello World Program
  • Comments in Kotlin
  • Input and Output

Kotlin Data Types

Data types define the type of data a variable can store.

  • Numeric Types
  • Boolean and Char
  • Strings
  • Type Conversion

Variables and Constants

  • var vs val
  • Mutable and Immutable Variables
  • Scope of Variables

Operators in Kotlin

  • Arithmetic Operators
  • Comparison Operators
  • Logical Operators
  • Assignment Operators

Control Flow

  • If and Else
  • When Expression
  • Loops: for, while, do-while
  • Break and Continue

Functions in Kotlin

  • Function Declaration
  • Default and Named Arguments
  • Lambda Functions
  • Higher-Order Functions
  • Recursion

Arrays and Collections

  • Arrays
  • Lists
  • Sets
  • Maps
  • Collection Operations

Strings in Kotlin

  • String Templates
  • String Functions
  • String Manipulation

Object-Oriented Programming (OOP)

  • Classes and Objects
  • Constructors
  • Inheritance
  • Polymorphism
  • Abstraction
  • Interfaces

Data Classes and Sealed Classes

  • Data Classes
  • Sealed Classes
  • Enum Classes

Null Safety

  • Nullable Types
  • Safe Call Operator
  • Elvis Operator
  • Not-null Assertion

Exception Handling

  • Try, Catch, Finally
  • Throw Keyword
  • Custom Exceptions

Advanced Collections

  • Mutable vs Immutable Collections
  • Filtering and Mapping
  • Grouping and Sorting

Coroutines and Concurrency

  • Introduction to Coroutines
  • Suspending Functions
  • Async and Await
  • Concurrency in Kotlin

Java Interoperability

  • Calling Java from Kotlin
  • Calling Kotlin from Java
  • Mixed Projects

File Handling in Kotlin

  • Reading Files
  • Writing Files
  • Working with Streams

Advanced Topics in Kotlin

  • Extension Functions
  • Generics
  • Annotations
  • Reflection

Kotlin for Android Development

  • Android Basics with Kotlin
  • Activities and Intents
  • Layouts and UI
  • Working with APIs

Best Practices in Kotlin

  • Writing Clean Code
  • Null Safety Best Practices
  • Performance Optimization
  • Debugging Techniques