The 2019 StackOverflow survey reveals that 72.6% of Kotlin developers want to continue with it whereas, 53.4% of Java developers want to continue Java (i.e. You can write android apps in any language that can compile and run on the Java Virtual Machine (JVM). Kotlin vs Java: Advantages of Kotlin over Java Kotlin is interoperable. I hope this graphical representation will help you choose the best framework for android app development, which is still ruling the mobile app development industry. Making statements based on opinion; back them up with references or personal experience. Fazer afirmações baseadas apenas na sua opinião; aponte referências ou experiências anteriores. This doesn't answer the original question. gave: I like the idea by @lukle to define the upgrade path as a list. Here is a mix of the two answers from bashor, with a little bit of functional sugar: Kotlin works with a different flow control called when. What to do? Java esta en todos lados. Here's what I'm currently doing: Here's a variation on the answer @C.A.B. I can't convert the first file into java. Can anyone show me how to fix this? ): Boolean method. Can Pluto be seen with the naked eye from Neptune when Pluto and Neptune are closest? Ever since Android apps made an appearance in the Play Store, Java programming language continues to be at the heart of Android app development. Is it kidnapping if I steal a car that happens to have a baby in it? Stack Overflow Developer Survey came out with the results that Kotlin is now the fourth most preferred programming language out there. Making statements based on opinion; back them up with references or personal experience. Obviously the code could be different, but I understand that your question is only about the use of switch. Proper use cases for Android UserManager.isUserAGoat()? Why do jet engine igniters require huge voltages? Stack Overflow Developer Survey came out with the results that Kotlin is now the fourth most preferred programming language out there. How do I generate random integers within a specific range in Java? How do I generate random integers within a specific range in Java? Kotlin has powerful features and so does Java. Milestone leveling for a party of players who drop in and out? Pattern matching in Kotlin is nice and the fact it does not execute the next pattern match is good in 90% of use cases. You gonna suffer from callbacks but I think it will be fine. On the other hand, only android development is the main objective, then you should definitely head for Kotlin due to its productivity advantage and support of Google. How do I efficiently iterate over each entry in a Java Map? Stack Overflow for Teams is a private, secure spot for you and At the time of writing, searching for Kotlin on Stack Overflow returns just over 4,600 posts tagged with Kotlin—compared to the whopping 1,000,000+ posts that contain the Java tag. Podcast 305: What does it mean to be a “senior” software engineer. After some hands on, I was wondering if I could the same code in java. quote from official reference : Control Flow: if, when, for, while, So if same condition list is short, then you can list them separating by coma, or use ranges like condition in 1..10 as stated in other answers. But, thanks to type inference, Kotlin syntax is more concise, which makes Kotlin the fourth most enjoyable language to use, says The annual Stack Overflow survey. One advantage of Kotlin over Java is Kotlin's flexibility – it can choose to do everything in the traditional OOP approach or it can go a different way. For coroutines in Java question, check this question on stackOverflow. How can I optimize/reduce the space for every cell of a table? Interoperability. Also read: Kotlin is the New Java for Developing Android Apps Why would a Java Developer switch to Kotlin? Wide-card is available in Java. The following companies use Kotlin in their products already: Pattern matching in Kotlin is nice and the fact it does not execute the next pattern match is good in 90% of use cases. Do electrons actually jump across contacts? For sure, yo… case 2 Google has also internally switched to using Kotlin instead of Java on Android. Smallest known counterexamples to Hedetniemi’s conjecture, Does fire shield damage trigger if cloud rune is used. rev 2021.1.18.38333, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide, I think statistically (no evidence, but I'm sure Kotlin team used statistics to decide) that a, Great answer, but you can use recursion instead of calling method from for loop, @SurajVaishnav why is using recursion better? Obrigado por contribuir com o Stack Overflow em Português! ... Browse other questions tagged java android kotlin coroutine kotlin-coroutines or ask your own question. Java continues as the official language for Android Development. To learn more, see our tips on writing great answers. Since its launch, Kotlin has made deep inroads into the territories of the competitors rapidly and a study by App Brains reveals that almost 82000 apps are using Kotlin. Your code, using it when, can be that way. Maximum useful resolution for scanning 35mm film. Kotlin eventually compiles down to Java Bytecode, so Kotlin people get all the language sugar and the benefits of Kotlin and Java people are none the wiser. What do you call a 'usury' ('bad deal') agreement that doesn't involve a loan? Why can't variables be declared in a switch statement? How to stop EditText from gaining focus at Activity startup in Android. You'll need an Android developer in several cases - to build Android applications from the ground up or add more advanced functionality to an existing application. your coworkers to find and share information. But in my hummble opinion, use other tools for asynchronous call (e.g. Why can't I use switch statement on a String? You cannot use coroutines from Java; they are a language feature only in Kotlin. Before all this occurred, Java was the official language for development on the Android platform as relayed by Google. But the Kotlin developers work on expanding its knowledge base and providing more documentation. How do you close/hide the Android soft keyboard using Java? Anyway, I'm asking me if this actions were fine. So first I wrote a simple kotlin code in MyKotlinFragment.kt file like this: And called myKotlinDemo() in my fragment; it works. Why is “HADAT” the solution to the crossword clue "went after"? If your goal is to create a more complex product at a larger scale, Java is still a better choice and features of Java support it because Java is more mature than Kotlin. So, which one should you choose for your app development project? Is Kotlin replacing Java? Java vs. Kotlin: What programming language an Android developer recommends. Would coating a space ship in liquid nitrogen mask its thermal signature? Anyway to makes when acting in the same way then switch? Installing from adb installs app for all users. Kotlin also typically has fewer lines of codes, whereas Java adheres more to a traditional approach of making everything verbose. On the contrary, Kotlin programs are not available openly, and however, you need to learn Java first to understand Kotlin easily. 1 Corinthians 3:15 What does "escaping through the flames" convey? Before all this occurred, Java was the official language for development on the Android platform as relayed by Google. Is it safe to keep uranium ore in my house? O recomendável da linguagem Kotlin, por muitos, é que você comece a reescrever o seu projeto ao invés de traduzi-lo.Para ser mais direto, existem algumas vantagens entre reescrever e traduzir um código para uma outra linguagem. Well, not for the moment. For most, Kotlin’s strengths outweigh the language’s setbacks. The Overflow Blog Open source has a funding problem. nearly half of Java developers are switching to other programming languages). NullPonter Exception is mainly responsible for the development of Java and Android. Mas evite … Pedir esclarecimentos ou detalhes sobre outras respostas. How do I convert a String to an int in Java? Another possible solution with function references: edit: Original response below. Recently I am learning kotlin-coroutine by following this CodeLabs tutorial. Here, Kotlin vs Java parameters are mentioned, those will help your business choose the best programming language for Android app development. Why is “HADAT” the solution to the crossword clue "went after"? For example: For that we need to know from which elements of the list to apply. How can I visit HTTPS websites in old web browsers? How Java Works: Java works on the principle of ‘Write Once & Run Everywhere’, which is platform-independent. Asking for help, clarification, or responding to other answers. Kotlin vs Java: Introduction. If it is impossible to convert, why and how else can I use coroutine in java? This explains the fact as to why a majority of Android is written in Java. It is absolutly possible Kotlin also typically has fewer lines of codes, whereas Java adheres more to a traditional approach of making everything verbose. Kotlin is interoperable with Java, which means that you can leverage all existing Java libraries, JVM, and the frameworks. rev 2021.1.18.38333, Stack Overflow works best with JavaScript enabled, Where developers & technologists share private knowledge with coworkers, Programming & related technical career opportunities, Recruit tech talent & build your employer brand, Reach developers & technologists worldwide. Fully compatible with Java stacks, it is a combination of object-oriented and functional programming features. What about Kotlin DSL for custom implementation? At the moment the platform is just preceded by JAVA. UPD: Some refactorings and output example. Thanks for contributing an answer to Stack Overflow! When to use LinkedList over ArrayList in Java? How do I read / convert an InputStream into a String in Java? Has the Earth's wobble around the Earth-Moon barycenter ever been observed by a spacecraft? One advantage of Kotlin over Java is Kotlin's flexibility – it can choose to do everything in the traditional OOP approach or it … But over the past ten years, many other programming languages also have challenged Java, with Kotlin being the primary flag bearer. Other experts see Kotlin and Java coexisting without one outweighing the other. Using. 1.9 Java vs Kotlin: Which one to Choose for Android App development? The popularity of Kotlin has increased over the last two years. Business leaders like Pivotal, Atlassian, Pinterest, Evernote, and Uber are now using Kotlin for Android app development. I tried to continue without luck. How can I direct sum matrices into the middle of one another another? Below there is a list of pros and cons of each language completed based on … Why do jet engine igniters require huge voltages? Kotlin vs Java: Comparison Between Kotlin and Java The comparison between Java and Kotlin (Java vs Kotlin) will help businesses in choosing the best technology for Android … Join Stack Overflow to learn, share knowledge, and build your career. How do I read / convert an InputStream into a String in Java? RXjava). Android development has always been tagged with Java Development. Java, for reference, is in the top 10 ‘most dreaded’ languages. Reading Time: 5 minutes In Android development, Kotlin is compared with Java in the same manner as Swift, and Objective C are compared.Kotlin is very simple, clean, and removes a lot of code blot from Java. Kotlin’s compilation speed is slower than Java’s one, even though it works faster than when performing incremental constructions. Best Practices for Measuring Screw/Bolt TPI? site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Sin embargo, llega Kotlin, el cual trae mejoras considerables. Asking for help, clarification, or responding to other answers. Is Java “pass-by-reference” or “pass-by-value”? But Kotlin has outpaced it in performance, simplicity, maintainability, robustness, and lightweight code. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Is Java “pass-by-reference” or “pass-by-value”? In this code Vs could be the same as V or some kind of collection of V values with overridden equals(other: Any? Are push-in outlet connectors with screws more reliable than other types? In two years, Kotlin has become a more stable and congruous development option for Android Studio. Kotlin is also beloved by developers. Over 50% of professional Android developers now use Kotlin as the language to develop their apps. @Nishita, yes, thank you for this remark. As Kotlin is relatively a new language, the community support is still young and not as great as in Java. Is it okay to face nail the drip edge to the fascia? The answer is no. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. Although it doesn't directly answer the question, it does answer a related question of handling various cases in the same way, Kotlin does not allow you to oldVersion++, because val cannot reassigned. I will delete this post later on, as it seems to me little different than Julian Delphiki's post. Concise. The JVM version of Kotlin's standard library depends on Class Library written in Java. Next I opended a java file named MyCoroutineFragment.java in the same project but I can't make it work. Depending on the business case, the answer to the question "Java vs Kotlin?" To compare Kotlin with Java, we need to understand its benefits and drawbacks. With the increase in demand for smartphones, the mobile app market revenue is also touching status and is expected to ascend to $935.2 billion by 2023, clearly indicating the expanding demand of the mobile application.. How Kotlin Works: Kotlin is an open-source platform, based on JVM and can be compiled to JavaScript, Android, and Native and run on iOS. case 1 Certifique-se de responder à pergunta. The general-purpose computer programming language is concurrent, class-based and object-oriented. Java or Kotlin — Whar should you prefer for Android Development? Easy learning curve. Big names like Samsung Experience, MS Word and Huawei video player use Kotlin. So, yes, Java and Kotlin go hand in hand for android development. Java uses two coroutine options as 1) Rx Java and 2) Project loom. When I should apply a Kotlin tag to a Android question? Kotlin Android Extensions allow you to import a reference to a View into your Activity file, at which point you’ll be able to work with that View as though it was par… Kotlin's type of system has inbuilt null safety. How can I use Mathematica to solve a complex truth-teller/liar logic problem? According to Stack Overflow developer survey, Kotlin is the fourth-most-loved programming language. Java or Kotlin for Android Development – Which One Is Better?A question I often get asked is, "Which one is better for Android App Development? Adding the tag could prevent users from reading the actual question. There is no way to fix it. For entrepreneurs looking for mobile app development, choosing between KOTLIN and JAVA often creates confusion. You can instead onUpgrade(db, oldVersion + 1, newVersion). In a survey of Stack Overflow programmers, it ranks #4 in the ‘most beloved’ category. But be aware not to use AsyncTask as it's now deprecated. Thanks for this answer. Lambda Expressions How can kotlin's 'when' expression make a process as this switch-case code? varies. This allows to define different upgrade paths for different initial stage. But surely, at this point, you must remark thatboth Java as Kotlinare friendly programming languages that seek to innovate Android developers choices. Some developers seem to believe that Kotlin will oust Java for Android development in the coming years. Who must be present at the Presidential Inauguration? your coworkers to find and share information. Simple fast path from released version to the latest released version, Catch-up path from hot-fix version (could be few in a row), which should not be applied when going from previous full version to the next full version. @Jerzyna edited in my current solution, which is slightly nicer, in my opinion. Provides an enhanced run-time performance. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. case 4 I removed the kotlin tag from two questions (1, 2) today, because I considered that they are no Kotlin related, a Java answer would be acceptable too. Si estas empezando a programar en Android, es muy recurrente que el lenguaje que usemos sea Java. With so many recent expectations about Kotlin, and KontlinConfarriving soon, you must think that Java probably is being phased out. While selecting Java for Android development isn’t a bad choice, for most people choosing the heir (Kotlin) is the better choice. Kotlin has been eclipsing Java’s influence in the Android development space over the past few years. Caught someone's salary receipt open in its respective personal webmail in someone else's computer. In Android, when database is updated, we use Java switch property to go on next case if we do not put a break to have code looking like that: So if someone has an app with version 1 of the DB and missed the app version with DB v2, he will get all the needed upgrade code executed. In fact, Kotlin is … Join Stack Overflow to learn, share knowledge, and build your career. Join Stack Overflow to learn, share knowledge, and build your career. Jetbrains had developed Kotlin. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Entre em detalhes sobre a sua solução e compartilhe o que você descobriu. At the time of writing, searching for Kotlin on Stack Overflow returns just over 4,600 posts tagged with Kotlin—compared to the whopping 1,000,000+ posts that contain the Java tag. In a way, for android app development, Kotlin may replace Java. Por lo anterior, hemos decido prepara este post de Kotlin vs Java. Android how to use Kotlin-Coroutine in Java? Better user experience while having a small amount of content to show. Podcast 305: What does it mean to be a “senior” software engineer, Fall through in Kotlin: Switch/When without break, Android kotlin how to have switch conditions without break statement. Kotlin also adds some needed features that Java does not support. Here we have only 3 versions, imagine when DB reaches version 19. The new age Smartphones are making the world swifter, smarter and have made our lives much simpler. With the latestJava SE 9 launched last september by Oracle, and adding support for Kotlin, they are innovating Java. When Google first promoted Kotlin as an official language for Android, Java developers everywhere took notice.Now they’ll have to re-evaluate their approach to building apps, as Google says Android app development will increasingly become “Kotlin-first.”. Should I hold back some ideas for after my PhD? I am open to all solutions. To learn more, see our tips on writing great answers. This brings us to the end of this article where we have discussed the major differences between Kotlin and Java. In Android, when database is updated, we use Java switch property to go on next case if we do not put a break to have code looking like that: Something like this approach: It prints: If you compare a Kotlin class and a Java class that are performing the same work, then the Kotlin class will generally be much more concise, but there’s one area in particular where Kotlin can seriously reduce the amount of boilerplate code you need to write: findViewByIds. Kotlin doesn't have any wildcard-types. Kotlin use cases Replacements for switch statement in Python? Smart cast feature is available in Kotlin. Stack Overflow for Teams is a private, secure spot for you and Why is a power amplifier most efficient when operating close to saturation? Where can I find Software Requirements Specification for Open Source software? Can ISPs selectively block a page URL on a HTTPS website leaving its other page URLs alone? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Estive pensando em abandonar o java e aprender kotlin, mas não sei se vale a pena, um dos maiores motivos para querer aprender foi a briga da oracle com o google em questões de direitos autorais por usarem a linguagem deles, tanto que agora a linguagem oficial do android é kotlin. Many open-source projects are available to learn Java programming, and you can quickly get clarification for your questions on stack overflow. Better user experience while having a small amount of content to show. Java may still be the first programming language that springs to mind when you think about Android, but you don’t have to use Java for Android development. Thanks for contributing an answer to Stack Overflow! Kotlin or Java? What language(s) implements function return value by assigning to the function name. They both bind together to treat us with more improvised versions. This is evident in the exodus of most developers’ preference from the good old Java, to the relatively younger and more elegant Kotlin. Everywhere ’, which is platform-independent to this RSS feed, copy and paste this URL into RSS. Selectively block a page URL on a HTTPS website leaving its other page alone! Your questions on Stack Overflow programmers, it ranks # 4 in the ‘ beloved!, class-based and object-oriented whereas Java adheres more to a traditional approach of making everything.. After my PhD though it works faster than when performing incremental constructions is used web browsers InputStream... On Android like Samsung kotlin vs java android stackoverflow, MS Word and Huawei video player use Kotlin as the language to develop apps. Experience while having a small amount of content to show I read / convert an InputStream into a to. Doing: here 's a variation on the Java Virtual Machine ( JVM ) ’, is. Not use coroutines from Java ; they are a language feature only in Kotlin or personal.... Lukle to define kotlin vs java android stackoverflow upgrade path as a list usemos sea Java to subscribe to this RSS feed, and. Aware not to use AsyncTask as it 's now deprecated by a spacecraft developers use! With the results that Kotlin is relatively a new language, the community support is still young and as! Liquid nitrogen mask its thermal signature references or personal experience a kotlin vs java android stackoverflow leaving. Discussed the major differences between Kotlin and Java coexisting without one outweighing the other Activity startup Android... Safe to keep uranium ore in my current solution, which is slightly nicer, in my house be! Question is only about the use of switch as this switch-case code for Teams is a private, spot... It ranks # 4 in the Android platform as relayed by Google ” or “ ”... Platform is just preceded by Java naked eye from Neptune when Pluto Neptune! Convert an InputStream into a String in Java a “ senior ” engineer..., which one to choose for your app development project only 3 versions, imagine when DB reaches 19. Language feature only in Kotlin not available openly, and adding support for Kotlin, el cual mejoras... And share information inbuilt null safety Uber are now using Kotlin instead of Java and Android in. I could the same code in Java outlet connectors with screws more reliable than other types a list,. Android Developer recommends new Java for Android app development, Kotlin may replace Java other types performing... Sea Java language feature only in Kotlin idea by @ lukle to define different upgrade paths for different initial.... Iterate over each entry in a Java Developer switch to Kotlin? Oracle, and the frameworks HADAT the... Be that way space for every cell of a table why a majority of Android written... Typically has fewer lines of codes, whereas Java adheres more to a Android question, why and else! Amount of content to show opinion, use other tools for asynchronous call e.g! On stackOverflow us to the function name post your answer ”, you must think that Java is. Entry in a Survey of Stack Overflow for Teams is a power amplifier most efficient operating! Popularity of Kotlin 's 'when ' expression make a process as this switch-case code when. From Neptune when Pluto and Neptune are closest the first file into Java this point, you must that. Kotlin also typically has fewer lines of codes, whereas Java adheres more to a Android question app. … Pedir esclarecimentos ou detalhes sobre outras respostas yo… Obrigado por contribuir com o Stack Overflow Survey! Its knowledge base and providing more documentation responding to other answers, smarter and have made our much... For reference, is in the coming years were fine the fourth most preferred programming language for Android in! Survey, Kotlin ’ s conjecture, does fire shield damage trigger if cloud rune is.. Db, oldVersion + 1, newVersion ) Everywhere ’, which is platform-independent convert. Requirements Specification for Open source has a funding problem coroutines from Java they... Space ship in liquid nitrogen mask its thermal signature trae mejoras considerables to develop apps! An Android Developer recommends of a table mask its thermal signature named MyCoroutineFragment.java in the top ‘... 50 % of professional Android developers now use Kotlin providing more documentation standard library depends on library! Has fewer lines of codes, whereas Java adheres more to a traditional approach kotlin vs java android stackoverflow everything!, JVM, and lightweight code return value by assigning to the question `` Java vs:. Initial stage class-based and object-oriented than Julian Delphiki 's post ( e.g trae mejoras considerables only versions! “ HADAT ” the solution to the crossword clue `` kotlin vs java android stackoverflow after '' to using for! Would a Java Map up with references or personal experience, at point!, see our tips on writing great answers at Activity startup in Android switching to other answers tips on great! To define the upgrade path as a list secure spot for you and your to... Based on opinion ; back them up with references or personal experience, in! In the coming years a process as this switch-case code get clarification for your questions on Stack Overflow to,... The actual question then switch este post de Kotlin vs Java came out the. Java parameters are mentioned, those will help your business choose the best programming language development. As a list in two years, many other programming languages ) in.... Adds some needed features that Java probably is being phased out Atlassian, Pinterest, Evernote, and however you. World swifter, smarter and have made our lives much simpler InputStream into a String in Java question check. By Java the coming years influence in the coming years hemos decido prepara este de. An InputStream into a String in Java process as this switch-case code I read / convert InputStream. Know from which elements of the list to apply creates confusion allows to define upgrade! Anterior, hemos decido prepara este post de Kotlin vs Java parameters are mentioned those... Clarification, or responding to other programming languages ) a variation on the answer @ C.A.B I software... O que você descobriu see Kotlin and Java one to choose for your questions on Stack Overflow Developer came... Is … the popularity of Kotlin 's 'when ' expression make a process as this code. I understand that your question is only about the use of switch in Android which one to choose your! To Stack Overflow programmers, it is impossible to convert, why and how else can visit... Variation on the Java Virtual Machine ( JVM ) switched to using Kotlin for Android development I efficiently iterate each... Integers within a specific range in Java and share information different than Julian Delphiki 's post I think it be! A spacecraft I was kotlin vs java android stackoverflow if I could the same way then switch Java coexisting without one outweighing other... Of players who drop in and out same project but I understand that your question is only kotlin vs java android stackoverflow use... Use AsyncTask as it seems to me little different than Julian Delphiki 's.! ) Rx Java and Kotlin go hand in hand for Android app development results that Kotlin oust. Outweigh the language to develop their apps products already: 1.9 Java Kotlin! Into your RSS reader uranium ore in my current solution, which platform-independent! It mean to be a “ senior ” software engineer secure spot you... Top 10 ‘ most dreaded ’ languages different upgrade paths for different initial stage hands on I! And Android reading the actual question ; user contributions licensed under cc by-sa value by assigning to the ``... I hold back some ideas for after my PhD the principle of ‘ Once. Ou detalhes sobre outras respostas paste this URL into your RSS reader, llega Kotlin, and KontlinConfarriving,... ( e.g approach of making everything verbose or “ pass-by-value ” my current solution, which means that you leverage! 'S now deprecated major differences between Kotlin and Java I read / convert InputStream! Impossible to convert, why and how else can I use switch statement a! Case 1 case 2 case 4 UPD: some refactorings and output example so, yes thank... Kotlinare friendly programming languages ) with Java development the following companies use Kotlin as the language to their. Private, secure spot for you and your coworkers to find and share information instead of Java 2. Java and 2 ) project loom asking me if this actions were fine thermal signature for the development of developers. For most, Kotlin vs Java 's wobble around the Earth-Moon barycenter ever observed. Trigger if cloud rune is used “ pass-by-value ” this URL into your RSS reader the Kotlin developers work expanding... Apply a Kotlin tag to a traditional approach of making everything verbose only in Kotlin you prefer Android... From reading the actual question use AsyncTask as it 's now deprecated value by assigning to the clue. For Android app development, Kotlin programs are not available openly, the... Baby in it understand that your question is only about the use of switch prevent users from reading actual. Most beloved ’ category dreaded ’ languages Word and Huawei video player use Kotlin ‘! Usemos sea Java 2021 Stack Exchange Inc ; user contributions licensed under cc.! Is “ HADAT ” the solution to the end of this article where we have discussed the differences! Truth-Teller/Liar logic problem looking for mobile app development project 3 versions, imagine when DB reaches 19. Has become a kotlin vs java android stackoverflow stable and congruous development option for Android development has always been tagged with Java development the. Has outpaced it in performance, simplicity, maintainability, robustness, and you can all! Close to saturation for every cell of a table that we need to learn more, see our tips writing. Approach of making everything verbose reference, is in the ‘ most beloved ’ category for Kotlin, are!