Class declaration syntax in Kotlin - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a simple class named Person.

Kotlin

class [1]

Drag options to blanks, or click blank then click option'

APerson

BpersonClass

Cperson

DMyClass

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or incorrect class names.

Forgetting to capitalize the class name.

The class name should start with a capital letter and match the intended name Person.

2fill in blank

medium

Complete the code to declare a class named Car with an empty body.

Kotlin

class Car [1]

Drag options to blanks, or click blank then click option'

A<>

B()

C[]

D{}

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of braces for the class body.

Using square brackets or angle brackets.

In Kotlin, the class body is enclosed in curly braces {}. An empty body means just opening and closing braces.

3fill in blank

hard

Fix the error in the class declaration by completing the code.

Kotlin

class Person [1]

Drag options to blanks, or click blank then click option'

A<

B{

C(

D[

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or angle brackets instead of braces.

Omitting the opening brace.

The class body must start with a curly brace { to be syntactically correct.

4fill in blank

hard

Fill both blanks to declare a class named Book with an empty body.

Kotlin

class [1] [2]

Drag options to blanks, or click blank then click option'

ABook

B()

C{}

DBook()

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of braces for the body.

Adding parentheses after the class name unnecessarily.

The class name is Book and the empty body is {}.

5fill in blank

hard

Fill all three blanks to declare a class named Animal with a primary constructor that takes a name parameter of type String.

Kotlin

class [1]([2]: [3]) {}

Drag options to blanks, or click blank then click option'

AAnimal

Bname

CString

Danimal

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase class name.

Swapping parameter name and type.

Omitting the type.

The class name is Animal. The constructor parameter is name of type String.