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<!DOCTYPE html SYSTEM "about:legacy-compat"> <html lang="en-US" data-preset="contrast" data-primary-color="#307FFF"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="built-on" content="2025-02-15T01:05:11.730123806"><meta name="build-number" content="3450"><link rel="canonical" href="https://kotlinlang.org/docs/getting-started.html" data-react-helmet="true"><script> (function (w, d, s, l, i) { w[l] = w[l] || []; w[l].push({'gtm.start': new Date().getTime(), event: 'gtm.js'}); var f = d.getElementsByTagName(s)[0], j = d.createElement(s), dl = l != 'dataLayer' ? 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It's concise, safe, interoperable with Java and other languages, and provides many ways to reuse code between multiple platforms for productive programming.</p><p id="f60oyo_3">To start, why not take our tour of Kotlin? This tour covers the fundamentals of the Kotlin programming language and can be completed entirely within your browser.</p><p id="f60oyo_4"><a href="kotlin-tour-welcome.html" id="f60oyo_8"><figure id="f60oyo_9"><img alt="Start the Kotlin tour" src="images/start-kotlin-tour.svg" title="Start the Kotlin tour" width="700" height="700"></figure></a></p><section class="chapter"><h2 id="install-kotlin" data-toc="install-kotlin">Install Kotlin</h2><p id="f60oyo_10">Kotlin is included in each <a href="https://www.jetbrains.com/idea/download/" id="f60oyo_11" data-external="true" rel="noopener noreferrer">IntelliJ IDEA</a> and <a href="https://developer.android.com/studio" id="f60oyo_12" data-external="true" rel="noopener noreferrer">Android Studio</a> release. Download and install one of these IDEs to start using Kotlin.</p></section><section class="chapter"><h2 id="choose-your-kotlin-use-case" data-toc="choose-your-kotlin-use-case">Choose your Kotlin use case</h2><div class="tabs" id="f60oyo_13" data-anchors="[android,backend,console,cross-platform-mobile,data-analysis]"><div class="tabs__content" data-gtm="tab" id="console" data-title="Console"><p id="f60oyo_19">Here you'll learn how to develop a console application and create unit tests with Kotlin.</p><ol class="list _decimal" id="f60oyo_20" type="1"><li class="list__item" id="f60oyo_22"><p id="f60oyo_26"><span class="control" id="f60oyo_27"><a href="jvm-get-started.html" id="f60oyo_28">Create a basic JVM application with the IntelliJ IDEA project wizard</a>.</span></p></li><li class="list__item" id="f60oyo_23"><p id="f60oyo_29"><span class="control" id="f60oyo_30"><a href="jvm-test-using-junit.html" id="f60oyo_31">Write your first unit test</a>.</span></p></li><li class="list__item" id="f60oyo_24"><p id="f60oyo_32"><span class="control" id="f60oyo_34">Join the Kotlin community:</span></p><ul class="list _bullet" id="f60oyo_33"><li class="list__item" id="f60oyo_35"><p><img alt="Slack" src="images/slack.svg" class="inline-icon-" title="Slack" id="f60oyo_37" width="25" height="25"> Slack: <a href="https://surveys.jetbrains.com/s3/kotlin-slack-sign-up" id="f60oyo_38" data-external="true" rel="noopener noreferrer">get an invite</a>.</p></li><li class="list__item" id="f60oyo_36"><p><img alt="StackOverflow" src="images/stackoverflow.svg" class="inline-icon-" title="StackOverflow" id="f60oyo_39" width="25" height="25"> StackOverflow: subscribe to the <a href="https://stackoverflow.com/questions/tagged/kotlin" id="f60oyo_40" data-external="true" rel="noopener noreferrer">"kotlin"</a> tag.</p></li></ul></li><li class="list__item" id="f60oyo_25"><p id="f60oyo_41"><span class="control" id="f60oyo_43">Follow Kotlin</span> on:</p><ul class="list _bullet" id="f60oyo_42"><li class="list__item" id="f60oyo_44"><p><img alt="Twitter" src="images/twitter.svg" class="inline-icon-" title="Twitter" id="f60oyo_47" width="18" height="18"> <a href="https://twitter.com/kotlin" id="f60oyo_48" data-external="true" rel="noopener noreferrer">Twitter</a></p></li><li class="list__item" id="f60oyo_45"><p><img alt="Reddit" src="images/reddit.svg" class="inline-icon-" title="Reddit" id="f60oyo_49" width="25" height="25"> <a href="https://www.reddit.com/r/Kotlin/" id="f60oyo_50" data-external="true" rel="noopener noreferrer">Reddit</a></p></li><li class="list__item" id="f60oyo_46"><p><img alt="YouTube" src="images/youtube.svg" class="inline-icon-" title="YouTube" id="f60oyo_51" width="25" height="25"> <a href="https://www.youtube.com/channel/UCP7uiEZIqci43m22KDl0sNw" id="f60oyo_52" data-external="true" rel="noopener noreferrer">Youtube</a></p></li></ul></li></ol><p id="f60oyo_21">If you encounter any difficulties or problems, report an issue in our <a href="https://youtrack.jetbrains.com/issues/KT" id="f60oyo_53" data-external="true" rel="noopener noreferrer">issue tracker</a>.</p></div><div class="tabs__content" data-gtm="tab" id="backend" data-title="Backend"><p id="f60oyo_54">Here you'll learn how to develop a backend application with Kotlin server-side.</p><ol class="list _decimal" id="f60oyo_55" type="1"><li class="list__item" id="f60oyo_57"><p id="f60oyo_61"><span class="control" id="f60oyo_63">Create your first backend application:</span></p><ul class="list _bullet" id="f60oyo_62"><li class="list__item" id="f60oyo_64"><p><a href="jvm-get-started-spring-boot.html" id="f60oyo_66">Create a RESTful web service with Spring Boot</a>.</p></li><li class="list__item" id="f60oyo_65"><p><a href="https://ktor.io/docs/creating-http-apis.html" id="f60oyo_67" data-external="true" rel="noopener noreferrer">Create HTTP APIs with Ktor</a>.</p></li></ul></li><li class="list__item" id="f60oyo_58"><p id="f60oyo_68"><span class="control" id="f60oyo_69"><a href="mixing-java-kotlin-intellij.html" id="f60oyo_70">Learn how to mix Kotlin and Java code in your application</a>.</span></p></li><li class="list__item" id="f60oyo_59"><p id="f60oyo_71"><span class="control" id="f60oyo_73">Join the Kotlin server-side community:</span></p><ul class="list _bullet" id="f60oyo_72"><li class="list__item" id="f60oyo_74"><p><img alt="Slack" src="images/slack.svg" class="inline-icon-" title="Slack" id="f60oyo_76" width="25" height="25"> Slack: <a href="https://surveys.jetbrains.com/s3/kotlin-slack-sign-up" id="f60oyo_77" data-external="true" rel="noopener noreferrer">get an invite</a>.</p></li><li class="list__item" id="f60oyo_75"><p><img alt="StackOverflow" src="images/stackoverflow.svg" class="inline-icon-" title="StackOverflow" id="f60oyo_78" width="25" height="25"> StackOverflow: subscribe to the <a href="https://stackoverflow.com/questions/tagged/kotlin" id="f60oyo_79" data-external="true" rel="noopener noreferrer">"kotlin"</a> tag.</p></li></ul></li><li class="list__item" id="f60oyo_60"><p id="f60oyo_80"><span class="control" id="f60oyo_82">Follow Kotlin</span> on:</p><ul class="list _bullet" id="f60oyo_81"><li class="list__item" id="f60oyo_83"><p><img alt="Twitter" src="images/twitter.svg" class="inline-icon-" title="Twitter" id="f60oyo_86" width="18" height="18"> <a href="https://twitter.com/kotlin" id="f60oyo_87" data-external="true" rel="noopener noreferrer">Twitter</a></p></li><li class="list__item" id="f60oyo_84"><p><img alt="Reddit" src="images/reddit.svg" class="inline-icon-" title="Reddit" id="f60oyo_88" width="25" height="25"> <a href="https://www.reddit.com/r/Kotlin/" id="f60oyo_89" data-external="true" rel="noopener noreferrer">Reddit</a></p></li><li class="list__item" id="f60oyo_85"><p><img alt="YouTube" src="images/youtube.svg" class="inline-icon-" title="YouTube" id="f60oyo_90" width="25" height="25"> <a href="https://www.youtube.com/channel/UCP7uiEZIqci43m22KDl0sNw" id="f60oyo_91" data-external="true" rel="noopener noreferrer">Youtube</a></p></li></ul></li></ol><p id="f60oyo_56">If you encounter any difficulties or problems, report an issue in our <a href="https://youtrack.jetbrains.com/issues/KT" id="f60oyo_92" data-external="true" rel="noopener noreferrer">issue tracker</a>.</p></div><div class="tabs__content" data-gtm="tab" id="cross-platform-mobile" data-title="Cross-platform"><p id="f60oyo_93">Here you'll learn how to develop a cross-platform application using <a href="multiplatform-intro.html" id="f60oyo_96">Kotlin Multiplatform</a>.</p><ol class="list _decimal" id="f60oyo_94" type="1"><li class="list__item" id="f60oyo_97"><p id="f60oyo_102"><span class="control" id="f60oyo_103"><a href="https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-setup.html" id="f60oyo_104" data-external="true" rel="noopener noreferrer">Set up your environment for cross-platform development</a>.</span></p></li><li class="list__item" id="f60oyo_98"><p id="f60oyo_105"><span class="control" id="f60oyo_107">Create your first application for iOS and Android:</span></p><ul class="list _bullet" id="f60oyo_106"><li class="list__item" id="f60oyo_108"><p><a href="https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-create-first-app.html" id="f60oyo_111" data-external="true" rel="noopener noreferrer">Create a basic cross-platform application from scratch with the project wizard</a>.</p></li><li class="list__item" id="f60oyo_109"><p><a href="https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-integrate-in-existing-app.html" id="f60oyo_112" data-external="true" rel="noopener noreferrer">Make your existing Android application work on iOS</a>.</p></li><li class="list__item" id="f60oyo_110"><p><a href="https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-ktor-sqldelight.html" id="f60oyo_113" data-external="true" rel="noopener noreferrer">Create a cross-platform application using Ktor and SQLdelight</a>.</p></li></ul></li><li class="list__item" id="f60oyo_99"><p id="f60oyo_114"><span class="control" id="f60oyo_115">Explore <a href="https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-samples.html" id="f60oyo_116" data-external="true" rel="noopener noreferrer">sample projects</a></span>.</p></li><li class="list__item" id="f60oyo_100"><p id="f60oyo_117"><span class="control" id="f60oyo_119">Join the Kotlin Multiplatform community:</span></p><ul class="list _bullet" id="f60oyo_118"><li class="list__item" id="f60oyo_120"><p><img alt="Slack" src="images/slack.svg" class="inline-icon-" title="Slack" id="f60oyo_122" width="25" height="25"> Slack: <a href="https://surveys.jetbrains.com/s3/kotlin-slack-sign-up" id="f60oyo_123" data-external="true" rel="noopener noreferrer">get an invite</a> and join the <a href="https://kotlinlang.slack.com/archives/C0B8MA7FA" id="f60oyo_124" data-external="true" rel="noopener noreferrer">#getting-started</a> and <a href="https://kotlinlang.slack.com/archives/C3PQML5NU" id="f60oyo_125" data-external="true" rel="noopener noreferrer">#multiplatform</a> channels.</p></li><li class="list__item" id="f60oyo_121"><p><img alt="StackOverflow" src="images/stackoverflow.svg" class="inline-icon-" title="StackOverflow" id="f60oyo_126" width="25" height="25"> StackOverflow: Subscribe to the <a href="https://stackoverflow.com/questions/tagged/kotlin-multiplatform" id="f60oyo_127" data-external="true" rel="noopener noreferrer">"kotlin-multiplatform" tag</a>.</p></li></ul></li><li class="list__item" id="f60oyo_101"><p id="f60oyo_128"><span class="control" id="f60oyo_130">Follow Kotlin</span> on:</p><ul class="list _bullet" id="f60oyo_129"><li class="list__item" id="f60oyo_131"><p><img alt="Twitter" src="images/twitter.svg" class="inline-icon-" title="Twitter" id="f60oyo_134" width="18" height="18"> <a href="https://twitter.com/kotlin" id="f60oyo_135" data-external="true" rel="noopener noreferrer">Twitter</a></p></li><li class="list__item" id="f60oyo_132"><p><img alt="Reddit" src="images/reddit.svg" class="inline-icon-" title="Reddit" id="f60oyo_136" width="25" height="25"> <a href="https://www.reddit.com/r/Kotlin/" id="f60oyo_137" data-external="true" rel="noopener noreferrer">Reddit</a></p></li><li class="list__item" id="f60oyo_133"><p><img alt="YouTube" src="images/youtube.svg" class="inline-icon-" title="YouTube" id="f60oyo_138" width="25" height="25"> <a href="https://www.youtube.com/channel/UCP7uiEZIqci43m22KDl0sNw" id="f60oyo_139" data-external="true" rel="noopener noreferrer">Youtube</a></p></li></ul></li></ol><p id="f60oyo_95">If you encounter any difficulties or problems, report an issue to our <a href="https://youtrack.jetbrains.com/issues/KT" id="f60oyo_140" data-external="true" rel="noopener noreferrer">issue tracker</a>.</p></div><div class="tabs__content" data-gtm="tab" id="android" data-title="Android"><p id="f60oyo_141">To start using Kotlin for Android development, read <a href="https://developer.android.com/kotlin/get-started" id="f60oyo_144" data-external="true" rel="noopener noreferrer">Google's recommendation for getting started with Kotlin on Android</a>.</p><p id="f60oyo_142">Join the Android community on <img alt="Slack" src="images/slack.svg" class="inline-icon-" title="Slack" id="f60oyo_145" width="25" height="25"> Slack: <a href="https://surveys.jetbrains.com/s3/kotlin-slack-sign-up" id="f60oyo_146" data-external="true" rel="noopener noreferrer">get an invite</a> and join the <a href="https://kotlinlang.slack.com/archives/C0B8M7BUY" id="f60oyo_147" data-external="true" rel="noopener noreferrer">#android</a> channel.</p><p id="f60oyo_143">Follow Kotlin on <img alt="Twitter" src="images/twitter.svg" class="inline-icon-" title="Twitter" id="f60oyo_148" width="18" height="18"> <a href="https://twitter.com/kotlin" id="f60oyo_149" data-external="true" rel="noopener noreferrer">Twitter</a>, <img alt="Reddit" src="images/reddit.svg" class="inline-icon-" title="Reddit" id="f60oyo_150" width="25" height="25"> <a href="https://www.reddit.com/r/Kotlin/" id="f60oyo_151" data-external="true" rel="noopener noreferrer">Reddit</a>, and <img alt="YouTube" src="images/youtube.svg" class="inline-icon-" title="YouTube" id="f60oyo_152" width="25" height="25"> <a href="https://www.youtube.com/channel/UCP7uiEZIqci43m22KDl0sNw" id="f60oyo_153" data-external="true" rel="noopener noreferrer">Youtube</a>, and don't miss any important ecosystem updates.</p></div><div class="tabs__content" data-gtm="tab" id="data-analysis" data-title="Data analysis"><p id="f60oyo_154">From building data pipelines to productionizing machine learning models, Kotlin is a great choice for working with data and getting the most out of it.</p><ol class="list _decimal" id="f60oyo_155" type="1"><li class="list__item" id="f60oyo_156"><p id="f60oyo_160"><span class="control" id="f60oyo_162">Create and edit notebooks seamlessly within the IDE:</span></p><ul class="list _bullet" id="f60oyo_161"><li class="list__item" id="f60oyo_163"><p><a href="get-started-with-kotlin-notebooks.html" id="f60oyo_164">Get started with Kotlin Notebook</a>.</p></li></ul></li><li class="list__item" id="f60oyo_157"><p id="f60oyo_165"><span class="control" id="f60oyo_167">Explore and experiment with your data:</span></p><ul class="list _bullet" id="f60oyo_166"><li class="list__item" id="f60oyo_168"><p><a href="https://kotlin.github.io/dataframe/overview.html" id="f60oyo_170" data-external="true" rel="noopener noreferrer">DataFrame</a> – a library for data analysis and manipulation.</p></li><li class="list__item" id="f60oyo_169"><p><a href="https://kotlin.github.io/kandy/welcome.html" id="f60oyo_171" data-external="true" rel="noopener noreferrer">Kandy</a> – a plotting tool for data visualization.</p></li></ul></li><li class="list__item" id="f60oyo_158"><p id="f60oyo_172"><span class="control" id="f60oyo_174">Get the latest updates about Kotlin for Data Analysis:</span></p><ul class="list _bullet" id="f60oyo_173"><li class="list__item" id="f60oyo_175"><p><img alt="Slack" src="images/slack.svg" class="inline-icon-" title="Slack" id="f60oyo_177" width="25" height="25"> Slack: <a href="https://surveys.jetbrains.com/s3/kotlin-slack-sign-up" id="f60oyo_178" data-external="true" rel="noopener noreferrer">get an invite</a> and join the <a href="https://kotlinlang.slack.com/archives/C4W52CFEZ" id="f60oyo_179" data-external="true" rel="noopener noreferrer">#datascience</a> channel.</p></li><li class="list__item" id="f60oyo_176"><p><img alt="Twitter" src="images/twitter.svg" class="inline-icon-" title="Twitter" id="f60oyo_180" width="18" height="18"> Twitter: follow <a href="http://twitter.com/KotlinForData" id="f60oyo_181" data-external="true" rel="noopener noreferrer">KotlinForData</a>.</p></li></ul></li><li class="list__item" id="f60oyo_159"><p id="f60oyo_182"><span class="control" id="f60oyo_184">Follow Kotlin</span> on:</p><ul class="list _bullet" id="f60oyo_183"><li class="list__item" id="f60oyo_185"><p><img alt="Twitter" src="images/twitter.svg" class="inline-icon-" title="Twitter" id="f60oyo_188" width="18" height="18"> <a href="https://twitter.com/kotlin" id="f60oyo_189" data-external="true" rel="noopener noreferrer">Twitter</a></p></li><li class="list__item" id="f60oyo_186"><p><img alt="Reddit" src="images/reddit.svg" class="inline-icon-" title="Reddit" id="f60oyo_190" width="25" height="25"> <a href="https://www.reddit.com/r/Kotlin/" id="f60oyo_191" data-external="true" rel="noopener noreferrer">Reddit</a></p></li><li class="list__item" id="f60oyo_187"><p><img alt="YouTube" src="images/youtube.svg" class="inline-icon-" title="YouTube" id="f60oyo_192" width="25" height="25"> <a href="https://www.youtube.com/channel/UCP7uiEZIqci43m22KDl0sNw" id="f60oyo_193" data-external="true" rel="noopener noreferrer">Youtube</a></p></li></ul></li></ol></div></div></section><section class="chapter"><h2 id="is-anything-missing" data-toc="is-anything-missing">Is anything missing?</h2><p id="f60oyo_194">If anything is missing or seems confusing on this page, please <a href="https://surveys.hotjar.com/d82e82b0-00d9-44a7-b793-0611bf6189df" id="f60oyo_195" data-external="true" rel="noopener noreferrer">share your feedback</a>.</p></section><div class="last-modified">Last modified: 10 December 2024</div><div data-feedback-placeholder="true"></div><div class="navigation-links _bottom"><a href="home.html" class="navigation-links__prev">Kotlin Docs</a><a href="kotlin-tour-welcome.html" class="navigation-links__next">Welcome to our tour of Kotlin!</a></div></article><div id="disqus_thread"></div></div></section></main></div><script src="static/v3/app.js"></script></body></html>