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Basics

What is Kotlin?

Install Kotlin

Kotlin Operators

Kotlin Functions

Kotlin Ternary

Kotlin Boolean

Kotlin String

Kotlin Loops

Kotlin switch

Kotlin Constructors

Kotlin array

Kotlin Map

Kotlin mapOf

Kotlin Filter

Kotlin Range

Kotlin Static Function

Kotlin typealias

Kotlin lambda

Kotlin delegate

Kotlin takeIf

Kotlin Tuple

Kotlin reduce

Kotlin JSON

Kotlin collections

Kotlin Inline Function

Kotlin kclass

Kotlin groupBy

Kotlin Interview Questions

Kotlin version

Kotlin forEach

Kotlin extension function

Kotlin Regex

Kotlin Generics

Kotlin also

Kotlin let

Kotlin List

Kotlin when

Kotlin Null

Kotlin Exposed

Kotlin Object

Kotlin pair

Kotlin List to Map

Kotlin Pattern Matching

Kotlin Sealed Class

Kotlin optional parameter

Kotlin init

Kotlin Native

Kotlin Getter

Kotlin Write to File

Kotlin instanceof

Kotlin Singleton

Kotlin private constructor

Kotlin Abstract Class

Kotlin enum

Kotlin Elvis Operator

Kotlin Data Class

Kotlin flatMap

Kotlin arrayList

Kotlin Random

Kotlin Mutable List

Kotlin companion object

Kotlin anonymous class

Kotlin Serialization

Kotlin apply

Kotlin set

Kotlin Flow

Kotlin Coroutines

Kotlin Queue

Kotlin println

Kotlin Higher Order Functions

Kotlin Interface

Kotlin class

Kotlin Unit

Kotlin Internal

Kotlin print

Kotlin const

Kotlin Lazy

Kotlin Use

Kotlin Reflection

Kotlin Optional

Kotlin REPL

Kotlin Gradle

Kotlin GUI

Kotlin val vs var

Kotlin try-with-resources

Kotlin graphQL

Kotlin Builder Pattern

Kotlin HTTP Client

Kotlin Empty List

Kotlin When Multiple Conditions

For Loop in Kotlin

Kotlin Exceptions

Kotlin add to list

Kotlin Data Class Inheritance

Kotlin runBlocking

Kotlin JVM

Kotlin Destructuring

Kotlin joinToString

Kotlin not configured

Kotlin Multiplatform

Kotlin DSL

Kotlin IDE

Kotlin Tutorial

The official designer of java IDE called IntelliJ IDEA is JetBrains which introduced a programming language as well called Kotlin. Kotlin runs on Java Virtual Machine. Kotlin was declared as an official language for android development by Google in 2017. The object-oriented programming features and functional features are combined into a unique platform in Kotlin and it is an open-source programming language. Kotlin and java can be used together in a project and java code can be rewritten in Kotlin and Kotlin code can be rewritten in Java efficiently, i.e. Kotlin and Java are interoperable. The syntax used in Kotlin is concise than Java.

Necessity to Learn Kotlin

The main reasons to learn Kotlin are:

  • The demand for Kotlin experience is high.

A survey said that 2018 would be the year of Kotlin. This study says that twenty percent of the applications that were built using java before 2017 is now built using Kotlin. This has increased the demand for developers having Kotlin skills by the companies.

  • The projects can be developed faster using Kotlin.

The number of lines of code when programming is done in Kotlin is very less when compared to programming in other programming languages. Many development programs with only a few lines of code can be developed using Kotlin and it is a concise language.

  • The quality of the applications built using Koltin is very good.

Kotlin language consists of safety features that can reduce the bugs and number of failures. Hence the quality of the developed applications is improved.

  • Existing java libraries make use of Kotlin.

Kotlin and java can be used together in a project and java code can be rewritten in Kotlin and Kotlin code can be rewritten in Java efficiently, i.e. Kotlin and Java are interoperable. There is no need to stop using java, both Java and Kotlin can be used together.

  • Kotlin is the official language supported by Google for Android development.

Kotlin was declared as an official language for android development by Google in 2017. The object-oriented programming features and functional features are combined into a unique platform in Kotlin and it is an open-source programming language.

Applications of Kotlin

 The applications of Kotlin are:

  • Kotlin can be compiled on Java Virtual Machine and it can be made available wherever java is used today. Kotlin can be particularly used on the backend.
  • JavaScript can be compiled using Kotlin making it available for the frontend.
  • The design of Kotlin can be used for web development and server-side development.
  • People are also talking about using Kotlin for Data Science instead of Scala, python, etc.

Example:

Kotlin code to print a given statement:

package org.kotlinlang.play
fun main() {
println("Kotlin is replacing Java")
}

The output of the above code is:

Kotlin

Pre-requisites

 The prerequisites to learn Kotlin is a basic foundation of programming language and object-oriented concepts and prior experience in an object-oriented language like C++.

Target Audience

 Beginners can refer to this tutorial to understand the basics of Kotlin. This tutorial is helpful for people who want to pursue a career in the field of Kotlin. This tutorial is good learning for all other readers.