A modern programming language that makes developers happier.

kotlinlang

In kotlin :
val a = 10
val b = 10
And in java :
int x = 10
int y = 10
What’s the difference?

the only difference in this example is that `val` is not re-assignable

while Kotlin has only a single `Int` type conceptually, the compiler will represent it with a boxed Integer or primitive int as appropriate, automatically

this is all covered in the documentation, <https://kotlinlang.org/docs/basic-types.html#numbers-representation-on-the-jvm>

oh my bad , i have to type var
but here i am talking more about memory allocation

there is no difference in memory allocation

a `<http://kotlin.Int|kotlin.Int>` is never a mutable box. on JVM, it is represented by either a primitive `int` wherever possible, or an immutable boxed `java.lang.Integer` where not

you should consider `Int` to be like other *value* types: they have no identity, so instances (and whether they're the same or not) aren't even part of the language model