Variable declaration and initialization in Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an integer variable named age.

Java

int [1];

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

Aage

Bnumber

Ccount

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name different from the one requested.

Forgetting the semicolon at the end (not tested here).

The variable name age is used to declare the integer variable as requested.

2fill in blank

medium

Complete the code to initialize the integer variable score with the value 100.

Java

int score = [1];

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

A10

B1

C100

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different number than 100.

Forgetting the semicolon at the end.

The variable score is initialized with the value 100 as requested.

3fill in blank

hard

Fix the error in the code by completing the variable declaration for a double named price.

Java

double [1] = 9.99;

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

Aprice

Bcost

Camount

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different variable name than price.

Misspelling the variable name.

The variable name must be price to match the declaration and initialization.

4fill in blank

hard

Fill both blanks to declare and initialize a boolean variable named isActive with the value true.

Java

[1] [2] = true;

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

Aboolean

Bint

CisActive

Dactive

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong type like int.

Using a different variable name.

The type is boolean and the variable name is isActive as requested.

5fill in blank

hard

Fill all three blanks to declare and initialize a String variable named name with the value "Alice".

Java

[1] [2] = [3];

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

AString

Bname

C"Alice"

Dint

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong type like int.

Forgetting the quotes around the string value.

Using a different variable name.

The type is String, the variable name is name, and the value is the string "Alice".