SelfDrvn Interview Questions and Answers

var is mutable and can be reassigned, val is immutable and cannot be reassigned.

• var can be reassigned with a new value, val cannot be reassigned once initialized

• var is mutable, val is immutable

• Example: var number = 5; number = 10; // valid, val number = 5; number = 10; // invalid

Kotlin is a modern programming language that is concise, expressive, and fully interoperable with Java.

• Kotlin is statically typed and supports both object-oriented and functional programming.

• It has features like null safety, extension functions, coroutines, and smart casts.

• Kotlin is officially supported for Android development by Google.