Kotlin vs java android LEARNOVITA

Kotlin vs Java | Know Their Differences and Which Should You Learn?

Last updated on 04th Nov 2022, Artciles, Blog

About author

Grayson (Ionic Developer )

Grayson is an Ionic developer of designing, developing and implementing solutions for Mobile Hybrid App (IONIC) Designing and developing well-tested. He has expertised in set of tools for building native iOS and Android applications, and mobile-ready Progressive Web Apps, using familiar web libraries, frameworks, and languages.

(5.0) | 18958 Ratings 2149
    • In this article you will learn:
    • 1.Introduction to Kotlin and its Benefits.
    • 2.Challenges of Kotlin and its applications.
    • 3.Features of a Kotlin and java.
    • 4.Difference between Kotlin and Java.
    • 5.Conclusion.

What is Kotlin?

In Kotlin vs Java Kotlin is newly created language which is inspired by a Java, but it is an improved version of it with the many additional features. It is a clean, relatively simple, and has a fewer formalities and rules than Java and the other programming languages. To use this language to a program Android apps, developers still need to understand a basic programming concepts and structures.

What are benefits of a Kotlin?

  • Kotlin application deployment is fast to be compile, lightweight, and prevents the applications from growing in size.
  • Any piece of a code written in Kotlin is much smaller than in a Java, because it is less verbose and a less code means fewer bugs.
  • Kotlin compiles a code into a bytecode that can be executed in a JVM. Thus, all the libraries and frameworks built in a Java are transferred and run in Kotlin project.
  • Kotlin scripts help to configure a projects in Android Studio to support an automatic completion, and it helps to reduce a compile-time error detection.
  • It is protected from the NullPointerException .
  • Kotlin incorporates the coroutines, as well as interoperability with a JavaScript, for the web development.
Features of a Kotlin

Challenges of a Kotlin and its applications:

Challenges of a Kotlin language:

  • Kotlin is not that famous and therefore a developer community is sparse compared to the other well established languages like Java.
  • Kotlin matches a loosely and initial code readability becomes a bit complex to read and understand at a first.
  • It has small support community because a Kotlin is smaller than Java. In addition, it has a fewer libraries, blog posts, and tutorials.
  • Kotlin has steep learning curve, and converting teams to the Kotlin can be a real challenge due to language’s concise syntax.
  • There are few Kotlin developers available in a market. Therefore, it is quite complex to find an experienced mentor.

Applications of a Kotlin:

  • Pinterest.
  • Trello.
  • Evernote.
  • Twidere for Twitter.
  • Shadowsocks.

Features of a Kotlin and java:

  • Provides a Sorting Coding.
  • Kotlin uses a JVM, which combines features of a OOP and functional-oriented programming.
  • Provides a fast compilation.
  • Kotlin can support wide variety of an extension functions without any changes to code.
  • Can write a Kotlin code using the IDE or using command-line interface.
  • Smart feature casting helps to cut application cost and improve the speed or performance.

Features of a Java:

  • Write a code once and run it on almost any computing platform.
  • It is designed for a building object-oriented applications.
  • It is the multithreaded language that allows an automatic memory management.
  • Facilitates a distributed computing in its network-centric form.
Features of java

Difference between the Kotlin and Java:

    Kotlin allows users to create extension function. Java does not provide the any extension functions.
    Kotlin doesn’t need a lot of work for a data class. Java developers write and build a lot of the elements to develop classes.
    Kotlin does not offer an implicit conversions. Java supports an implicit conversions.
    There are no null variables or a objects in Kotlin. Void variables or objects are part of a Java language.
    Kotlin combines a features of both object-oriented and functional programming. Java is limited to the object-oriented programming.
    Kotlin does not support a static members. Java uses a static members.
    Variables of primitive type are objects. Variables of primitive type are not objects.
    In Kotlin, can have one or more a secondary constructors. In a Java, cannot have a secondary constructors. However it can have a multiple constructors.
    Kotlin string template also supports an expressions. Java strings do not support an expressions like a Kotlin.
    Kotlin code is fairly simple to deploy. Java code is hard to be deploy.
    Kotlin programs do not need a semicolons in their program. Java programs need semicolons.
    In Kotlin, coroutines are the concurrency design patterns that can be used to simplify a code. Java uses a two coroutine options such as 1) Rx Java and 2) Project Loon.
    A Kotlin has no wildcard-types. Wide-cards are be available in Java.
    Kotlin’s type system has a built-in zero protection. Null pointer exception is mainly responsible for a development of Java and Android.
    Smart Cast feature is available in a Kotlin. Smart Cast facility is not available in a Java.
    Kotlin does not need any variable data type specifications. Java needs variable of data type specifications.
    Kotlin supports a lambda expressions. Java does not support a lambda expressions.
    Lazy-loading feature is available in a Kotlin. This feature is not available in a Java.
    The language scripting capabilities allow to use a Kotlin directly in Gradle build scripts. The Java language does not provide a scripting capabilities.
    It supports a modern programming concepts like delegates, extensions, and higher-order functions. Java supports a OOPS programming concept.
    The average salary for Java developer is $104,793 per year. The average salary for Kotlin for a software engineer ranges from about a $107,275 per year for Android developer to $121,034 per year.


When considering all disadvantages of Java, especially problem with a NullPointerExceptions, Kotlin seems to be a better of the two. However Java is still essential language for a development of every Android app as Android OS itself is based on it. If need to future proof Android app development services, and should hire Kotlin developers for a same.

Are you looking training with Right Jobs?

Contact Us

Popular Courses