Kotlin vs Java – Difference Between Them

Kotlin combines features of both object-oriented and functional programming, whereas Java is limited to object-oriented programming.
Kotlin allows users to create an extension function, while Java doesn’t offer any extension functions.
Kotlin doesn’t offer implicit conversions, and Java supports implicit conversions.
There are no null variables or objects in Kotlin; on the other hand, Null variables or objects are part of the Java language.
Kotlin doesn’t support static members, while Java uses static members.
In Kotlin, variables of a primitive type are objects, while in Java Variables of a primitive type aren’t objects
Kotlin supports Lambda Expression, whereas Java doesn’t support Lambda expression. (Lambda expressions are added in Java 8)
Kotlin doesn’t require any variable datatype specifications, while Java requires variable datatype specifications.
Kotlin doesn’t require any variable datatype specifications, but Java requires variable datatype specifications.
Kotlin programs don’t require semicolons in their program, while Java program does need a semicolon.
Language scripting capabilities allow you to use Kotlin directly in your Gradle build scripts, while Java does not offer language scripting capabilities.