Why variables are needed in Java - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare an integer variable named 'age' with value 25.

Java

int [1] = 25;

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

A25

Bage

Cint

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using the value instead of the variable name.

Using a keyword instead of a name.

The variable name 'age' is used to store the value 25.

2fill in blank

medium

Complete the code to print the value of the variable 'score'.

Java

System.out.println([1]);

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

Ascore

B"score"

CSystem

Dprintln

Attempts:

3 left

💡 Hint

Common Mistakes

Putting quotes around the variable name.

Using method names instead of variable.

To print the value stored in the variable, use its name without quotes.

3fill in blank

hard

Fix the error in the code by completing the variable declaration correctly.

Java

double [1] = 9.99;

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

Aprice

B9.99

Cdouble

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using the value as the variable name.

Repeating the type keyword.

The variable name 'price' is needed to store the value 9.99.

4fill in blank

hard

Fill both blanks to declare a String variable 'name' and assign it the value "Alice".

Java

String [1] = [2];

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

Aname

B"Alice"

C"Bob"

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Not using quotes for the text.

Using wrong variable names.

The variable 'name' stores the text "Alice" as a String.

5fill in blank

hard

Fill all three blanks to declare an integer variable 'count', assign 10, and print it.

Java

int [1] = [2];
System.out.println([3]);

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

Acount

B10

Dvalue

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names in declaration and print.

Not assigning a value.

Declare 'count' as int with 10, then print 'count' to show the value.