Problem Statement
What is the difference between val and var in Kotlin?
Explanation
In Kotlin, val declares a read-only variable that can be assigned only once, similar to final in Java, promoting immutability and safer code. var declares a mutable variable that can be reassigned multiple times. Using val is preferred whenever possible as it makes code more predictable and thread-safe by preventing accidental modifications. The Kotlin compiler encourages using val by showing warnings when var could be replaced with val, helping developers write more functional and immutable code.
