Ternary operator in Java - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assign the smaller of two numbers to the variable min using the ternary operator.

Java

int a = 10;
int b = 20;
int min = (a < b) ? [1] : b;

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

Ab

Ba

C10

D20

Attempts:

3 left

💡 Hint

Common Mistakes

Using b instead of a for the true case.

Confusing the order of values in the ternary operator.

The ternary operator checks if a < b. If true, it assigns a to min, otherwise b.

2fill in blank

medium

Complete the code to assign "Even" or "Odd" to the variable result based on whether num is even or odd.

Java

int num = 7;
String result = (num % 2 == 0) ? [1] : "Odd";

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

A"Even"

B"Odd"

Cnum

D"Number"

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the true and false values.

Using the variable num instead of string literals.

The ternary operator checks if num % 2 == 0. If true, result is assigned "Even", else "Odd".

3fill in blank

hard

Fix the error in the ternary expression to correctly assign the absolute value of number to absValue.

Java

int number = -5;
int absValue = (number >= 0) ? number : [1];

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

A0

Bnumber

C-number

Dnumber * -1

Attempts:

3 left

💡 Hint

Common Mistakes

Using number instead of its negation for negative values.

Using number * -1 which is correct but less common than -number.

The ternary operator assigns number if it is non-negative; otherwise, it assigns -number to get the absolute value.

4fill in blank

hard

Fill both blanks to create a ternary expression that assigns "Pass" if score is 50 or more, otherwise "Fail".

Java

int score = 65;
String grade = (score [1] 50) ? [2] : "Fail";

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

A>=

B<

C"Pass"

D"Fail"

Attempts:

3 left

💡 Hint

Common Mistakes

Using < instead of >= in the condition.

Swapping the strings "Pass" and "Fail".

The condition checks if score >= 50. If true, grade is "Pass", else "Fail".

5fill in blank

hard

Fill all three blanks to create a ternary expression that assigns the maximum of x and y to max.

Java

int x = 15;
int y = 25;
int max = ([1] [2] [3]) ? x : y;

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

Ax

By

C<

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using < instead of > in the condition.

Swapping x and y in the condition or result.

The ternary operator checks if x > y. If true, max is x, otherwise y.