Kotlin Vs Java Which One is Better Option For Android App Development


Kotlin Vs Java Which One is Better Option For Android App Development

September 01, 2022 | By SYNARION IT

In addition, Android App Development Company choosing the appropriate programming language is challenging when developing Android applications, which is a beautiful way to grow your business.

For many of us, Java is the finest because it is used worldwide and is well regarded. But with the introduction of Kotlin, this seeming faith in Java is slightly questioned, and programmers begin looking up questions like:  Kotlin or Java for Android?

We decided to publish this article to clarify Kotlin vs. Java difficulties and provide you with a clear view. We will compare Kotlin and Java for  Android Mobile App Development here. So let’s get going! Several free house and room design applications.

What is Java?

Java is the native language of Android App Development Services and it is used by applications to communicate with the operating system and gain direct access to hardware. This language makes it possible to create software and supports almost any operating system, including Android, Windows, and Linux. Java, developed by Sun Microsystems and currently owned by Oracle, may be used with microservices.

 Benefits of Java-

The following advantages of using the Java programming language. Since Java is cross-platform, it may be utilized with almost any machine, server, or operating system. Java commands cannot endanger the data from other OS X programs or corrupt memory due to their robust coding.

Java is object-oriented, making it easy to create modular programs and reuse the parts that boost robustness. It is ready for use, and Java offers you access to many third-party codes already written and ready to go. The open-source nature of Java and the fact that many of its libraries are controlled by respected organizations like Google, Apache, and others ensure security.

Features Of Java

 What are the Challenges of the Java language?

  • Compared to other languages, such as C + or Python, the Syntax used by Java might be a little complex or burdensome.
  • Certain content that could be incompatible with the tool or equipment being used cannot be accessed with Java.
  • Accessing the latest Java improvements for mobile development is complex.
  • Java occasionally interferes with the way the Android API is designed.
  • Java test-driven development increases the amount of code that must be written while also increasing the likelihood of programming mistakes and problems.
  • Java uses a lot of system memory and runs a bit slower than other programming languages.

What is Kotlin?

Kotlin versus Java The recently developed language, Kotlin, was inspired by Java but is an enhanced version of it with many extra capabilities. Unlike Java and other programming languages, it is formality-free, quite essential, and bears fewer restrictions. Developers must be familiar with fundamental programming principles and structures to use this language to create Android apps.

What are the Benefits of Kotlin?

  • The Kotlin Application Deployment framework compiles apps more quickly, makes them lighter, and keeps them from getting more significant.
  • Kotlin is substantially less verbose than Java, which results in smaller chunks of code overall. Minor code also implies fewer problems.
  • Kotlin converts the source code into JVM-compatible bytecode. As a result, any Java library and framework may be used in Kotlin projects and is functional there.
  • For disabling compile-time error detection and setting up projects in Android Studio for auto-completion support, the Kotlin script is helpful.
  • Kotlin features coroutines and is compatible with Javascript for web development.

 What are the Challenges of the Kotlin language?

  • The development community for Kotlin is smaller than for other well-known languages like Java since it is less prominent.
  • Kotlin matches fragile patterns, which makes the initial readability of the code difficult to read and understand.
  • Additionally, it has fewer libraries, blogs, and tutorials.
  • Moving teams is challenging since Kotlin has a high learning curve and a concise syntax.
  • Therefore, it could be challenging to find a mentor with experience.

Features Of Kotlin

Kotlin vs. Java: A Quick Roundup

Even though Kotlin is an officially recognized language for creating Android apps, you might think there aren’t enough reasons to switch. Here are several arguments supporting the wisdom of migrating to Kotlin.

Kotlin vs. Java – Feature Showdown With Syntax

Null Safety

One of the significant problems with Java is NullPointerException (NPE), which may only occur when NullPointerException is explicitly called upon to be thrown. Some data Initialization-related problems or others caused inconsistencies. Problems with external Java programs. As was already noted in the section. Above, Kotlin avoids NullPointerException as compared to Java. In cases when a NullPointerException could be raised, and Kotlin crashes during compilation.

Data Classes

When comparing Kotlin to Java Android, Kotlin provides data classes that cause boilerplate code like equals, hashCode, function toString() { [native code] }, getters/setters, and many other things to be automatically generated. Think about the following instance: /* Java Code */

The identical class mentioned above, however, may be defined briefly in Kotlin using the – /* kotlin Code */

Extension Functions

With Kotlin, we may increase the functionality of current classes without having to inherit from them. The ability to create a class with additional Functionality without having to inherit from it is something Kotlin offers in comparison to Java. These are extension functions. A receiver type, or the type being extended, must come. Before the name of an extension function when declaring one.

Smart Casts

Kotlin does not always need explicit cast operators, but unlike Java, it “is-checks” for Immutable values, and inserts are cast when necessary.

Type Inference

It’s a great feature of Kotlin because you are not obliged to specify each variable’s type (in a clear and detailed manner).

However, you may also do so if you wish to explicitly declare a data type between Kotlin and Java for Android. Think about the following instance – /* not expressly defined */

Functional Programming

The most important aspect determining how well Kotlin runs compared to Java is that it is a functional programming language. The Kotlin programming language has numerous valuable features, including lambda expressions, operator overloading, higher-order functions, lazy evaluation, and many others.

The argument name in the code above is “fun,” and the function type is “() ->

Unit.” In this instance, we are stating that the function will not accept any parameters and will not provide any results.

For example, above, we only declare a variable named “sum.” Accepts two numbers, adds them, and returns the total as an integer. Then, to call It, we simply use “sum(2,2)”. Amazing, huh? In Kotlin, as opposed to Java Android, an anonymous function is a function that lets us define the return type but leaves off the function name.

So, Who Took The Crown?

This is true because Kotlin integrates with Java, offers incremental code changes, has a superior type of system to Java, and offers a simple migration route away from Java while maintaining backward compatibility. Kotlin is becoming the preferred language for mobile and Corporate apps compared to Java.

What are the Key Features of Kotlin Language?

For Android development, Kotlin is superior to Java in several ways:

  • Kotlin compiles to JVM bytecode or JavaScript programming code known as bytecode is run through a virtual machine once it has been constructed rather than the computer’s CPU.
  • This method allows source code to be built and executed through the virtual machine, then run on any platform.
  • After being translated to bytecode, a Kotlin program may be sent over a network and run by JVM (Java Virtual Machine).
  • Kotlin can use all existing Java Frameworks and Libraries; all current Java frameworks and libraries, including sophisticated Kotlin, may use frameworks that depend on annotation processing programs.
  • The Kotlin language’s ability to seamlessly interface with Maven, Gradle and other build systems is its vital strength.
  • Kotlin can be learned quickly, and it is approachable.
  • Reading the language reference alone can help you learn it quickly.
  • The Syntax is easy to comprehend (easy to use and understand).
  • Kotlin resembles Scala in appearance but is more straightforward when compared to Java.
  • A brand new capability that JetBrains built into IntelliJ transforms Java to Kotlin quickly and efficiently.
  • It stops us from typing repetitive code.

Kotlin’s null safety is excellent.

This kind of system aids in our ability to prevent null pointers and exceptions. When comparing Kotlin with Java, the system in Kotlin forbids the compilation of code that tries to assign or return null. Code reviews are not an issue because Kotlin’s primary focus is on legible Syntax; team members who are not fluent in the language may complete them.

 The Additional Features of Kotlin That No One Will Ever Tell You

The following are some characteristics of the Kotlin language:

 It Requires Less Code

Kotlin is substantially less verbose than Java. Therefore every piece of code written in it will be a lot smaller. Thus, “less code means fewer errors,” as well as less time needed for scheduling and project cost savings.

It’s Secure

Kotlin is protected from NullPointerException because all instances of null in the code are flagged at compilation time. Users must expressly tell the language that an object may be invalid, and users must then verify the nullity of the thing before using it. The likelihood of data loss and problems is lower with Kotlin.

It’s Easy to Learn

A Java developer can comprehend most of the code without having written a single line of Kotlin is one of the language’s most important advantages.

It’s Fun to Use

Kotlin is incredibly enjoyable to use as we discuss Kotlin vs. Java, even if this is quite subjective. On the other hand, Java irritates users with its restrictions and boilerplate, and users regularly experience mistakes due to its design issues.

Smart Casts

The Kotlin compiler is clever when it comes to casts. In many situations, Kotlin does not need the usage of explicit cast operators. However, when comparing Kotlin to Java and Android, Kotlin has “is-checks” for immutable data and automatically adds cast when necessary.

Type Inference

Kotlin’s excellent efficiency over Java is that each variable’s type doesn’t have to be explicitly specified (clearly and detailed). However, you also have the option of explicitly defining a data type.

Functional Programming

The fact that Kotlin is a functional programming language is what sets it apart from Java. In general, Kotlin contains a lot of helpful techniques, such as lambda expressions, operator overloading, lazy evaluation, higher-order functions, and much more.

What are the Business Benefits of Kotlin?

Due to Kotlin’s compatibility with Java, there is no risk associated with its adoption.

Kotlin’s learning curve and code review processes are simple, so developers may pick them up quickly. Kotlin has an entire support staff and a good reputation compared to Java. Therefore, there is no downtime. Programming in Kotlin combines procedural and functional programming. Businesses may use Kotlin for any development, including server-based, client-based web, and Android.

Does Kotlin Have a Future?

Yes, it is the solution. Over the past several years, Kotlin has had a tremendously positive influence on the IT industry. It’s already being used by numerous significant online sites, such as Basecamp, Flipboard, and Pinterest, to be supported by the primary frameworks. Google’s recent backing has demonstrated Kotlin’s future potential and Java’s ability to compete with it.

Around 1.5 million developers have used Kotlin code since the beginning of 2018, and by the middle of 2019, that figure has nearly doubled. It’s fair to assume that Kotlin will be around for a while, given enormous businesses’ adoption of the programming language and an almost universal attachment. Will Kotlin succeed as the premier “write once and run everywhere” language is the actual question?

With so many opportunities for current programming experimentation, Kotlin is swiftly establishing itself as a better programming language for creating mobile apps. Kotlin is, in general, raising the bar for what a programming language should be able to do.


We know that our project performs a clean build just once. Hence, we believe the compilation time for incremental builds is more critical for us. Therefore, while comparing Kotlin with Java, Kotlin is almost identical to Java, and yes, we can use Kotlin without being concerned about Compilation time.

We hope this article helped you with what you want to know.

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