1: Get started

Question 1

Which of the following is NOT a benefit of using the Kotlin language?

• Kotlin distinguishes between nullable and non-nullable data types.

• Kotlin is a supported language for building Android apps.

• Kotlin is designed so you can write less code with fewer bugs.

• Your code compiles faster in Kotlin.

Question 2

How do you start the Kotlin REPL?

• Type repl on the command line.

• Create a Kotlin project in IntelliJ IDEA, then select Run > Kotlin REPL.

• Open IntelliJ IDEA, then select File > Kotlin REPL.

• Create a Kotlin project in IntelliJ IDEA, then select Tools > Kotlin > Kotlin REPL.

Question 3

Which of the following is NOT true about Kotlin and Java code?

• Kotlin code and Java code can run side-by-side.

• You can add Kotlin code to an existing Java program.

• You can migrate existing Java code to Kotlin.

• Kotlin code will run faster than Java code.