Kotlin VS Java

Kotlin vs Java: Choosing the Right Language for Android App Development

Aug 09, 2023 |

10 minutes read

Kotlin VS Java

A person can survive without food for a day, but if you force them to stay far from their mobile devices for a day, they simply deny considering it ridiculous. Even the daily routine of the human is tarts with the mobile application to maintain their fitness. They can order food, get traveling tickets, and many more critical tasks of humans made easy by developing effective and accurate mobile applications.

As with the rise of mobile users, IT professionals need to develop efficient programming languages which enable developers to build responsive mobile applications easily. Kotlin and Java are the widely used Android mobile application development languages nowadays.

Still, it is more controversial for Android developers to choose the best language from these both – Kotlin & Java. Here, endorsing both trending coding languages made it easy to select the one for your app development project.

The Basics of Java:

Java is the mostly used Android app development language. It is the OOP (Object Oriented Programming) and network-centric language. Network-centric means a programming language which is also can be used as a platform itself. It is used to design and build high-standard and enterprise software applications for big data application management and server-side technologies. The versatility of Java falls in the core information technology sectors such as game development, cloud computing, Internet of Things (IoT), and many more.

Advantages of Using Java:

Java is becoming the more popular language among app developers because of its simplicity. Java language is easy to use for all levels of Java developers. There are some reasons behind using Java that developers want to continue their projects with it.

  • Standard Learning Resources
  • Community Support
  • Extensive Development Tools
  • Community Support
  • Platform Independence

Introduction to Kotlin:

While talking about Kotlin, is an object-oriented programming language, which uses the JVM (Java Virtual Machine) and libraries to deliver high-level Android applications. It was mainly designed to improve the quality of Java programming. Also, it is used in conjunctions with Java. It is not the preferred language for development, but its interoperability with Java and the libraries and functions made it popular to be in use with many types of applications. It is the best to use in server-side development, full-stack app development, data science, and multiplatform mobile development.

Advantages of Using Kotlin:

Kotlin programming language is an interoperable language with Java, so it inherits the benefits of Java too. It uses the compiler of Java to compile and run the programs. It offers many benefits to develop their applications with Java.

  • Faster Product Delivery
  • Java Interoperability
  • Great Coding Experience
  • Safety and Clarity
  • APIs Support

Advantages of Using Java

Differentiating Kotlin and Java

Among these powerful Android application development programming languages, it is crucial to choose the one for the developers. Let’s explore the core differences between Java and Kotlin languages.

1. Null Safety

Java programmers have to face the occurrences of NullPointerException. Null pointer exception is the runtime exception in Java that allows developers to assign a null value to the object. It is most important for developers to handle this exception before they continue their work.

In Kotlin, it doesn’t allow programmers to assign any type of null values and variables to the object. In simple terms, there are no occurrences of null pointer exceptions in Kotlin.

2. Coding Requirements

Kotlin is like a condensed language, it requires fewer lines of code to build the same functions compare to Java. It also helps minimize the errors made by humans and makes easier the app development cycle.

While Java is a more complex language to design and build apps, with the use of Kotlin, one will have the same features and functionalities to streamline your development cycle.

3. Extension Functions

After creating any methods in Java, it will be more critical to modify the existing methods for better results. The main result is that Java allows the developers to inherit the functionalities of a class into another class.

Kotlin offers the feature of extension functions, which allows developers to modify the classes and methods easily and faster.

4. Coroutines Support

Handling and the execution of multiple threads can be complex if the threads are not managed appropriately. Java allows to run multiple threading of compound operations in the background. The negative impact of this feature is that tracing the status of all threads at once is not possible, so it may raise mistakes in the program.

Kotlin works in the same way, it allows developers to create several coroutines which is a more accessible alternative. Also, one can hold the current execution of the coroutine and can continue without starting from the beginning.

5. Type Interface

Application development with Java programming mandates developers to declare the variable and the type of the variable explicitly. It enhances the full control that how their code will be interpreted in run-time.

In Kotlin programming language, programmers don’t need to declare the type of variables explicitly. It will automatically determine the data type based on the value assigned to it.

6. Static Members

Data members or data types which are declared statically are known as the static data members of the class. One can use those members in other classes and methods by using a single instance. Java development language allows developers to create and use static members.

Kotlin is not having any feature to build and utilize the static members in Android application development.

Create a Customized Android App for Your Business!


It is crucial to select the best mobile app development language to serve a fully-featured Android application. Kotlin and Java both are robust and amazing mobile application development platforms. The differences between these languages help you to choose the best language, or one can use both programming languages together to offer the best results. Sometimes, this choice depends on the specific requirements of the clients and the preferences of the development teams.

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    Jinal Shah

    The Managing Director of iFlair Web Technologies Pvt. Ltd. since 2004. He has spent 20+ years growing client businesses and assisting organisations ranging from Startups to Fortune 500 companies. Always shares cutting-edge topics on various technology platforms, Builds the prevailing concepts of the IT industry with interested readers.

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