Why conditional statements are needed in Java - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print "Adult" if age is 18 or more.

Java

int age = 20;
if (age [1] 18) {
    System.out.println("Adult");
}

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

A>=

B==

C<

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>=' causes the condition to be false for age 20.

Using '==' only checks if age is exactly 18, not more.

The condition age >= 18 checks if age is 18 or more, so it prints "Adult" correctly.

2fill in blank

medium

Complete the code to print "Even" if number is divisible by 2.

Java

int number = 10;
if (number [1] 2 == 0) {
    System.out.println("Even");
}

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

A+

B/

C%

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using '/' divides the number but does not check remainder.

Using '*' or '+' does not help check divisibility.

The modulus operator % gives the remainder. If number % 2 == 0, the number is even.

3fill in blank

hard

Fix the error in the condition to check if score is less than 50.

Java

int score = 45;
if (score [1] 50) {
    System.out.println("Fail");
}

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

A<

B>

C==

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' checks if score is greater than 50, which is wrong here.

Using '==' checks equality, not less than.

The condition should be score < 50 to check if score is less than 50.

4fill in blank

hard

Fill both blanks to print "Teenager" if age is between 13 and 19 inclusive.

Java

int age = 15;
if (age [1] 13 && age [2] 19) {
    System.out.println("Teenager");
}

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

A>=

B<

C<=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '<=' excludes age 19.

Using '>' instead of '>=' excludes age 13.

The condition age >= 13 && age <= 19 checks if age is between 13 and 19 inclusive.

5fill in blank

hard

Fill all three blanks to print "Eligible" if salary is above 3000, age is at least 18, and experience is more than 2 years.

Java

int salary = 3500;
int age = 25;
int experience = 3;
if (salary [1] 3000 && age [2] 18 && experience [3] 2) {
    System.out.println("Eligible");
}

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

A>=

B>

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>=' for salary includes 3000, but requirement is above 3000.

Using '<' for experience is incorrect here.

The conditions are: salary > 3000, age >= 18, and experience > 2 to print "Eligible".