If–else statement in Java - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of nested if–else

What is the output of this Java code snippet?

Java

int x = 10;
int y = 20;
if (x > y) {
    System.out.println("X is greater");
} else if (x == y) {
    System.out.println("X equals Y");
} else {
    System.out.println("Y is greater");
}

A Y is greater

B X equals Y

C X is greater

D No output

💡 Hint

Compare the values of x and y carefully.

Since x (10) is less than y (20), the else block runs printing 'Y is greater'.

❓ Predict Output

intermediate

If–else with boolean condition

What will this Java program print?

Java

boolean isRaining = false;
if (isRaining) {
    System.out.println("Take an umbrella");
} else {
    System.out.println("No umbrella needed");
}

A No umbrella needed

B Take an umbrella

C Compilation error

D No output

💡 Hint

Check the value of the boolean variable.

The variable is false, so the else block runs printing 'No umbrella needed'.

❓ Predict Output

advanced

If–else with multiple conditions

What is the output of this Java code?

Java

int score = 75;
if (score >= 90) {
    System.out.println("Grade A");
} else if (score >= 80) {
    System.out.println("Grade B");
} else if (score >= 70) {
    System.out.println("Grade C");
} else {
    System.out.println("Grade F");
}

A Grade F

B Grade A

C Grade B

D Grade C

💡 Hint

Check which condition the score satisfies first.

Score 75 is less than 80 but greater or equal to 70, so 'Grade C' is printed.

❓ Predict Output

advanced

If–else with assignment inside condition

What will this Java code print?

Java

int a = 5;
if ((a = 10) > 5) {
    System.out.println(a);
} else {
    System.out.println("Less or equal to 5");
}

A 5

B 10

C Compilation error

D Less or equal to 5

💡 Hint

Notice the assignment inside the if condition.

The assignment sets a to 10, which is greater than 5, so it prints 10.

❓ Predict Output

expert

If–else with complex boolean expressions

What is the output of this Java code?

Java

int x = 3;
int y = 4;
if (x > 2 && y < 5) {
    if (x + y == 7) {
        System.out.println("Sum is seven");
    } else {
        System.out.println("Sum is not seven");
    }
} else {
    System.out.println("Condition not met");
}

A Condition not met

B Sum is not seven

C Sum is seven

D Compilation error

💡 Hint

Evaluate both conditions carefully and then the sum.

x=3 > 2 and y=4 < 5 are true, sum is 7, so prints 'Sum is seven'.