Which is Higher for Android App Growth

Constructing an Android app is a well-liked possibility for a lot of companies contemplating creating their very own cell resolution. That’s as a result of Android is the most used smartphone working system worldwide with over 2.5 bln lively customers in additional than 190 international locations in 2022.

Whereas Android growth is a transparent alternative for a lot of, the controversy on whether or not to construct apps utilizing Java or Kotlin continues unabated. Each programming languages work nice for growing excessive performing, efficient, and feature-packed Android apps. On this article, we’ll examine Java vs Kotlin and discover out why these two programming languages elevate a lot debate within the Android app growth circles.

Kotlin vs Java: Comparability

For a very long time, Java was probably the most extensively used programming language for constructing Android apps. Android builders nonetheless desire utilizing Java for its easy portability, platform independence, nice growth setting, easiness to be taught, and huge set of libraries of any sort.

In 2011, the JetBrains firm thought-about all of the Java benefits and downsides in addition to one of the best facets of different programming languages akin to JavaScript, Pascal, TypeScript, Go, Scala, C++, C#, Rust, and lots of others, and created a substitute for Java – Kotlin. By 2019 Kotlin had already developed into a strong and secure programming language and Google claimed it to be a most popular possibility for Android growth.

Why has Kotlin grow to be Google’s alternative and is it nonetheless value growing Android apps in Java? To reply this query, let’s examine Java and Kotlin by numerous parameters.

Java and Kotlin Principal Options

The primary Java benefit is that it’s platform-independent. It implies that it might run on any system that helps the JVM (Java Digital Machine). Above all, Java is very safe as a consequence of using a public key, encryption-based authentication, and its personal unlawful code-checking system.

With Java, software program builders can determine code errors through the compilation time and eradicate error-prone states. Java has an intensive set of ready-made options and frameworks for quicker growth and challenge fixing.

One of many essential causes to decide on Kotlin for Android growth is that it shortens code size by as much as 20% compared to Java. This makes Kotlin-based apps extra environment friendly and fewer bug-prone.

Kotlin is a flexible programming language that may function on any platform. That’s as a result of it’s compiled in bytecode and runs on JVM similar to Java. Attributable to using JVM, Kotlin might be simply executed in Java and vice versa. This manner, software program builders can add as a lot Kotlin to Java and as a lot Java to Kotlin as they need and the developed app will run completely.

Ease of Use

Java is a primary programming language many builders begin studying to code with. It has a flat studying curve and is simple to grasp, but, it may be fairly difficult to learn. Opposite to Java, Kotlin requires a bit extra effort to be taught however as soon as it’s written, it’s a lot less complicated to grasp for different cell builders.

Let’s take a look on the identical primary “Hiya World!” program written within the two programming languages:

Kotlin wanted simply two traces to execute this system whereas Java extends to 5 traces to carry out the identical motion.


When operating Kotlin or Java apps, their code is compiled to bytecode which is executed on the JVM. Subsequently, it’s fairly laborious to check how the 2 languages use reminiscence as they’re fairly related to one another on this approach.

In the meantime, including some additional options to Kotlin makes it a extra useful programming language than Java. The variety of options in Kotlin leads to a bit slower compilation than easy Java with fewer options. Though these variations in velocity are so insignificant that hardly it’ll be noticeable for the developed enterprise software program.


Kotlin and Java simply interoperate with one another, subsequently, firms can use the 2 programming languages when growing their initiatives. Nonetheless, Kotlin takes it one step additional, and ranging from Kotlin 1.4 launch, it’s also simply appropriate with Apple’s Goal-C and Swift languages. This manner, software program builders may use Goal-C/Swift frameworks and libraries in Kotlin code whereas Kotlin modules might be utilized in Goal-C/Swift code as effectively.


Kotlin is rapidly rising in reputation, particularly amongst younger firms that construct their cell options from scratch. Nonetheless, Java doesn’t take a again seat in cell growth. There are numerous firms which were growing their cell apps in Java for a few years.

Furthermore, these builders who wish to work with Kotlin efficiently nonetheless ought to be well-versed in Java. However, why do they want Java? Listed below are just a few examples. It could actually occur that whereas constructing their cell apps in Kotlin, software program builders must use a selected library that operates solely with Java. One other instance is when studying Kotlin documentation, software program builders run into explanations akin to “it really works like in Java, you simply want to switch it barely”.

Neighborhood Help

Though Kotlin is a reasonably new programming language, it already has much-developed documentation. But, it’s nonetheless simpler to search out many extra detailed tutorials for Java. It’s so, just because Java has been used for an extended time period.

Kotlin, in its flip, doesn’t present any slow-down in its rising reputation. It implies that increasingly more software program builders go for Kotlin and contribute to the event of this programming language.

Key Variations Between Java and Kotlin

It’s clear that Kotlin received’t change Java within the close to future. However, what makes Kotlin a preferable alternative for a lot of cell app growth initiatives? It’s all within the programming language. Here’s a checklist of the important thing explanation why quite a few builders go for Kotlin over Java.

NullPointerExceptions is a well-known software program builders’ headache in Java when a null worth is attributed to variables and objects by default. In consequence, if builders try to seek advice from an object with a null worth, the NullPointerExceptions opens the exception they usually must deal with it.

In Kotlin, no variables or objects acquire null values by default and if a developer desires to assign a null worth, they need to add a query mark to the variable.

In Kotlin, builders can prolong the performance of the prevailing courses with out utilizing an inheritance from the category or the decorator design sample. It implies that whereas including extra capabilities to the prevailing app parts, software program builders don’t must implement any adjustments to the supply code. Additionally, through the use of extensions, builders scale back the variety of courses vital for app constructing and make the code much less repetitive. This helps to make Kotlin code a lot less complicated to learn and simpler to take care of.

In Java, the inheritance perform isn’t accessible and cell builders have to put in writing a sure methodology first after which name it to carry out the wanted motion.

Heavy app processes can load up a smartphone’s CPU and block job execution on Android. To forestall this example, cell builders use a Multithreading characteristic in Java. They create a number of threads with duties which can be dealt with asynchronously. Then again, this will increase execution complexity and can lead to code errors.

Kotlin gives an enhanced option to handle a number of threads that simplifies asynchronous code execution – coroutines. Coroutines are way more light-weight than threads, they permit software program builders to droop code execution and later resume it once more. This manner, coroutines be certain that the duties are dealt with easily and with none glitches.

Whereas Java software program builders have to put in writing a number of commonplace code to create courses for information storing, in Kotlin they will construct them in a number of easy clicks. All they should do is simply to incorporate the key phrase information in a category definition and the compiler will do the remainder of the work.

  • Practical Programming and Object-Oriented Programming

Kotlin entails each object-oriented (OOP) and useful (FP) programming constructs. This manner, programmers which can be used to working in one of many paradigms can successfully use Kotlin. For Practical Programming, it helps such options as high-order capabilities, perform varieties, and lambdas.

In the meantime, Java creators launched lambda expressions and useful interfaces in Java 8 solely to cut back the quantity of code and make it cleaner and extra concise. Though Java nonetheless can’t beat Kotlin on this job.

Why to Select Kotlin Over Java?

  • Kotlin’s syntax is clear and intuitive whereas it contains all present Java frameworks & libraries. It means fewer iterations through the growth course of, secure launch model and no deadlines rescheduled.
  • Kotlin is open-source and absolutely supported by Google, its authority and its status. Which means the developed Android purposes will certainly work on any Android system by default and with no exceptions.
  • Benchmarks present imperceptible lags for Kotlin purposes operating on the end-side. It means a lightning blaze utility, ethereal and error-free.

Kotlin vs Java Which is Higher?

Though Java remains to be probably the most typically chosen language for Android growth, there are nonetheless some instances the place Kotlin is a better option. For instance, conventional banks and cutting-edge fintech firms select Kotlin for its reliability and safety. It considerably simplifies and accelerates the event of their apps whereas lowering time-to-market.

Listed below are some well-known apps which have already switched to Kotlin.

05 - bp060-logo-1-pinterest.png

A well-known photo-sharing social service determined to make use of Kotlin of their utility with a median use of 150M customers per thirty days.

05 - bp060-logo-2-trello.png

A well known project-management utility now works with Java and Kotlin concurrently as a consequence of an incredible interoperability between the 2 languages.

05 - bp060-logo-3-evernote.png

Well-liked organizer app has just lately built-in Kotlin into its Android shopper.



Whereas some cell builders nonetheless debate on Kotlin vs Java which is healthier for constructing their cell apps, others successfully use the 2 programming languages of their initiatives. They take Java’s intensive libraries, instruments, and JVM and blend them with concise and feature-rich Kotlin. This manner, even these firms which have used Java for a very long time of their cell options can take pleasure in Kotlin advantages.

SCAND’s skilled workforce is retaining tempo with the latest expertise altercations and gives cell app growth utilizing Kotlin in addition to efficient migration to Kotlin on Android. Be happy to contact us for extra particulars or request.


Leave a Reply

Your email address will not be published.