Variables of primitive type are objects in Kotlin, but in Java, primitive type variables are not objects.

Java uses static members, whereas Kotlin doesn’t support static members.

In Kotlin, Null variables and objects are not found.

Null objects and variables are an integral part of the Java programming language.

Kotlin doesn’t support implicit conversions however, Java supports implicit conversions.

Kotlin offers extension creation capabilities, whereas Java doesn’t offer any extension function.

In contrast, Java only offers object-oriented programming.

Kotlin offers object-oriented and functional features to developers.

Key Difference Between Java and Kotlin Programming Languages

Java has been going on for too long, and today, we’re listing down the main differences, features, applications, and USPs of both languages so that you can differentiate between the two easily.īut first, let’s learn “What is Kotlin?” and “What is Java?”. In this article, we will uncover the differences between two popular programming languages, Kotlin and Java.

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