Kotlin Tutorial Last Updated : 06 Aug, 2025 Comments Improve Suggest changes Like Article Like Report This Kotlin tutorial is designed for beginners as well as professional, which covers basic and advanced concepts of Kotlin programming language. In this Kotlin tutorial, you'll learn various important Kotlin topics, including data types, control flow, functions, object-oriented programming, collections, and more. We will also delve into advanced concepts such as Kotlin coroutines, null safety, and functional programming in Kotlin.PrerequisitesTo get started with Kotlin, it's helpful to have a foundation in several key areas. Here are the primary prerequisites for beginners: Basic Understanding of Java: Kotlin is designed to be compatible with Java, so having a basic understanding of Java programming language is recommended. Programming Environment: Familiarity with any programming environment is assumed. Basic Concepts : Knowledge of basic concepts such as variables, commands, syntax, etc. is assumed. Basic Understanding of IDEs: Familiarity with Integrated Development Environments (IDEs) like IntelliJ IDEA or Android Studio will help you navigate and use these tools effectively. What is Kotlin? Kotlin is a modern programming language created by JetBrains, in 2011 the same company behind the popular IntelliJ IDEA. It runs on the Java Virtual Machine (JVM) and can also be compiled to JavaScript or native code. Kotlin is an object-oriented language, and a “better language” than Java, but still be fully interoperable with Java code. Kotlin is sponsored by Google, announced as one of the official languages for Android Development in 2017. Why Kotlin for Android Development? Google Support: Kotlin is officially supported by Google for Android development, ensuring it works well with Android Studio. Easy to Read and Write : Kotlin’s code is shorter and clearer than Java, making it easier to understand and work with. Works with Java: Kotlin can be used with Java in the same project, making it easy to switch from Java to Kotlin. Null Safety: Kotlin helps avoid errors by clearly handling null values, which are a common source of bugs in Java. Better Asynchronous Code: Kotlin’s coroutines make it easier to handle background tasks like network requests without blocking the app. Strong Community: Kotlin has a growing number of libraries, tools, and community resources to support developers. OverviewIntroduction to KotlinKotlin Environment setup for Command LineKotlin Environment setup with Intellij IDEAHello World program in KotlinBasicsKotlin Data TypesKotlin VariablesKotlin OperatorsKotlin Standard Input/OutputKotlin Type ConversionKotlin Expression, Statement and BlockControl Flow Kotlin if-else expressionKotlin while loopKotlin do-while loopKotlin for loopKotlin when expressionKotlin Unlabeled breakKotlin labeled breakKotlin unlabeled continueKotlin labeled continueArray & String Kotlin ArrayKotlin StringFunctionsKotlin functionsKotlin | Default and Named argumentKotlin RecursionKotlin Tail RecursionLambdas Expressions and Anonymous FunctionsKotlin Inline functionsKotlin infix function notationKotlin Higher-Order FunctionsCollectionsKotlin CollectionsKotlin list : ArraylistKotlin list : listOf()Kotlin Set : setOf()Kotlin mutableSetOf()Kotlin hashSetOf()Kotlin Map : mapOf()Kotlin HashmapOOPs ConceptKotlin Class and ObjectsKotlin Nested class and Inner classKotlin Setters and GettersKotlin | Class Properties and Custom AccessorsKotlin ConstructorKotlin Visibility ModifiersKotlin InheritanceKotlin InterfacesKotlin Data ClassesKotlin Sealed ClassesKotlin Abstract classEnum classes in KotlinKotlin extension functionKotlin genericsException HandlingKotlin Exception Handling | try, catch, throw and finallyKotlin Nested try block and multiple catch blockNull Safety Kotlin Null SafetyKotlin | Type Checking and Smart CastingExplicit type castingRegex & RangesKotlin Regular ExpressionKotlin RangesJava InteroperabilityJava Interoperability – Calling Kotlin from JavaJava Interoperability – Calling Java from KotlinMiscellaneousKotlin annotationsKotlin ReflectionKotlin Operator OverloadingDestructuring Declarations in KotlinEquality evaluation in KotlinComparator in KotlinTriple in KotlinPair in KotlinKotlin | apply vs withAndroidKotlin Android TutorialHow to create project in Android Studio using KotlinHow to install Android Virtual Device(AVD)Android Animations in KotlinAndroid Fade In/Out in KotlinAndroid MenusAndroid progress notifications in KotlinAndroid Project folder StructureConclusion In this Kotlin tutorial, we’ve explored the key features and benefits of using Kotlin for Android development. From its concise and readable syntax to its seamless interoperability with Java, Kotlin offers numerous advantages that make it an excellent choice for both new and experienced developers. We’ve also highlighted Kotlin’s null safety, which helps prevent common programming errors, and its powerful coroutines for managing asynchronous tasks efficiently. Comment More info K kartik Follow Improve Article Tags : Programming Language Kotlin Explore Kotlin Tutorial 4 min read OverviewIntroduction to Kotlin 4 min read Kotlin Environment setup for Command Line 2 min read Kotlin Environment setup with Intellij IDEA 2 min read Hello World program in Kotlin 2 min read BasicsKotlin Data Types 3 min read Kotlin Variables 2 min read Kotlin Operators 4 min read Kotlin Standard Input/Output 4 min read Kotlin Type Conversion 2 min read Kotlin Expression, Statement and Block 4 min read Control FlowKotlin if-else expression 4 min read Kotlin while loop 2 min read Kotlin do-while loop 2 min read Kotlin for loop 4 min read Kotlin when expression 6 min read Kotlin Unlabelled break 4 min read Kotlin labelled continue 4 min read Array & StringKotlin Array 6 min read Kotlin String 4 min read FunctionsKotlin functions 7 min read Kotlin Default and Named argument 7 min read Kotlin Recursion 3 min read Kotlin Tail Recursion 2 min read Kotlin Lambdas Expressions and Anonymous Functions 6 min read Kotlin Inline Functions 5 min read Kotlin infix function notation 5 min read Kotlin Higher-Order Functions 6 min read CollectionsKotlin Collections 6 min read Kotlin list : Arraylist 6 min read Kotlin list : listOf() 7 min read Kotlin Set : setOf() 4 min read Kotlin hashSetOf() 4 min read Kotlin Map : mapOf() 5 min read Kotlin Hashmap 7 min read OOPs ConceptKotlin Class and Objects 4 min read Kotlin Nested class and Inner class 3 min read Kotlin Setters and Getters 4 min read Kotlin Class Properties and Custom Accessors 3 min read Kotlin Constructor 6 min read Kotlin Visibility Modifiers 6 min read Kotlin Inheritance 10 min read Kotlin Interfaces 7 min read Kotlin Data Classes 3 min read Kotlin Sealed Classes 4 min read Kotlin Abstract class 5 min read Enum Classes in Kotlin 4 min read Kotlin extension function 4 min read Kotlin generics 6 min read Exception HandlingKotlin Exception Handling - try, catch, throw and finally 5 min read Kotlin Nested try block and multiple catch block 3 min read Null SafetyKotlin Null Safety 7 min read Kotlin Type Checking and Smart Casting 3 min read Kotlin Explicit Type Casting 3 min read Like