GDSC Android Bootcamp [Kotlin Quiz]

What is Kotlin?

• A programming language for web development

• A scripting language

• A programming language for Android development

• A markup language

Which of the following is true about Kotlin and Java interoperability?

• Kotlin is not interoperable with Java

• Kotlin can seamlessly interoperate with Java

• Kotlin can only interoperate with JavaScript

• Kotlin and Java have no compatibility features

In Kotlin, how do you declare a variable with a non-nullable type?

• var myVar: String? = "Hello"

• val myVar: String = "Hello"

• var myVar: String = "Hello"

• val myVar: String? = "Hello"

What is the purpose of the 'when' expression in Kotlin?

• Used for looping in Kotlin

• Used for exception handling

• Used for pattern matching and branching based on values

• Used for defining class properties

How do you define a function in Kotlin?

• func myFunction() {}

• fun myFunction() {}

• function myFunction() {}

• def myFunction() {}

What is the keyword used to declare a class in Kotlin?

• class

• struct

• type

• object

In Kotlin, how do you represent a single-line comment?

• // This is a comment

• /* This is a comment */

• <!-- This is a comment -->

• # This is a comment

What is the purpose of the 'lateinit' keyword in Kotlin?

• Indicates that a variable must be initialized in its declaration

• Allows a variable to be initialized after its declaration

• Declares a variable as a constant

• Specifies that a variable cannot be modified

How do you create an array in Kotlin?

• val myArray = arrayOf(1, 2, 3)

• let myArray = [1, 2, 3]

• myArray = {1, 2, 3}

• myArray = array(1, 2, 3)

What is the primary purpose of the 'is' keyword in Kotlin?

• Used for mathematical calculations

• Used for type checking and casting

• Used for loop iteration

• Used for string manipulation