Project structure and build basics in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare the main function in Kotlin.

Kotlin

fun [1]() {
    println("Hello, Kotlin!")
}

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Aexecute

Bstart

Cmain

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different function name like 'start' or 'run' which won't be recognized as the entry point.

The main function in Kotlin must be named main to serve as the entry point of the program.

2fill in blank

medium

Complete the code to define a Kotlin source file path inside the standard project structure.

Kotlin

src/[1]/kotlin/com/example/app/Main.kt

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Amain

Btest

Cresources

Djava

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'test' or 'resources' folder for main source files.

In Kotlin projects, source files are usually placed under src/main/kotlin following the standard Gradle project structure.

3fill in blank

hard

Fix the error in the Gradle build script to apply the Kotlin plugin.

Kotlin

plugins {
    id("[1]") version "1.8.0"
}

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Ajava

Bkotlin-android

Capplication

Dkotlin-jvm

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'java' plugin id which is for Java projects.

Using 'kotlin-android' for non-Android projects.

The correct plugin id for Kotlin JVM projects is kotlin-jvm. This enables Kotlin support for JVM targets.

4fill in blank

hard

Fill both blanks to create a Kotlin data class with two properties.

Kotlin

data class User(val [1]: String, val [2]: Int)

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Aname

Bage

Cemail

Did

Attempts:

3 left

💡 Hint

Common Mistakes

Using properties with wrong types or unrelated names.

The data class User has two properties: name of type String and age of type Int.

5fill in blank

hard

Fill all three blanks to create a Gradle dependency declaration for Kotlin standard library.

Kotlin

dependencies {
    implementation("org.jetbrains.kotlin:[1]:[2]")
    testImplementation("org.jetbrains.kotlin:kotlin-test:[3]")
}

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Akotlin-stdlib

B1.8.0

Dkotlin-reflect

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong library names or mismatched versions.

The Kotlin standard library dependency is kotlin-stdlib with version 1.8.0. The test dependency uses kotlin-test with the same version.