Kotlin Test 1

Question 1

What are the default classes in Kotlin?

Accepted Answer

final

Answer

Explanation:
equals(), hashCode(), and toString() are the three methods in Any (). As a result, all Kotlin classes include these methods. Kotlin classes are final by default, which means they can't be passed down. The open keyword can be used to make a class inheritable:

Question 2

In Kotlin, which of the following options is used to handle null exceptions?

Accepted Answer

Elvis Operator

Answer

Explanation:
In Kotlin, the Elvis operator is used to remove null pointer exceptions. It can be used to check if a variable is null or not, and if it is, it allows us to utilize a single default value.

Question 3

Kotlin was developed by who?

Accepted Answer

JetBrains

Answer

Explanation:
JetBrains s.r.o. is a Czech software development business that creates project management and software development solutions.

Question 4

Kotlin was created under the _______ license.

Accepted Answer

Apache 2.0

Answer

Explanation:
The JetBrains team invented Kotlin. The language was initially launched in February 2016 after a project began in 2010 to develop the language. The Apache 2.0 license was used to produce Kotlin.

Question 5

What is the definition of an immutable variable?

Accepted Answer

A variable that cannot change, read-only

Answer

Explanation:
A variable is immutable in programming when its value cannot change after it is created. When you manipulate a string, you are already using immutable variables without realizing it.

Kotlin Practice Test

Kotlin Practice Test

Kotlin Test 1