Why loop control is required in Java - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print numbers from 1 to 5 using a for loop.

Java

for(int i = 1; i [1] 5; i++) {
    System.out.println(i);
}

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

A<=

B>

C==

D>=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' or '>=' will not start the loop correctly.

Using '==' will only run the loop when i equals 5, missing other numbers.

The loop should continue as long as i is less than or equal to 5 to print numbers 1 through 5.

2fill in blank

medium

Complete the code to stop the loop when the number 3 is reached.

Java

for(int i = 1; i <= 5; i++) {
    if(i [1] 3) {
        break;
    }
    System.out.println(i);
}

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

A<

B>

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' or '>' will break the loop too early or too late.

Using '!=' will break the loop for all values except 3.

The loop should break when i equals 3, so the condition uses '=='.

3fill in blank

hard

Fix the error in the while loop condition to avoid an infinite loop.

Java

int count = 0;
while(count [1] 5) {
    System.out.println(count);
    count++;
}

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

A<

B>=

C==

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' or '>=' causes the loop to never run or run infinitely.

Using '==' runs the loop only when count equals 5, which is never true initially.

The loop should run while count is less than 5 to avoid infinite looping.

4fill in blank

hard

Fill both blanks to create a loop that prints even numbers from 2 to 10.

Java

for(int i = [1]; i [2] 10; i += 2) {
    System.out.println(i);
}

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

A2

B<=

C<

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Starting at 1 will print odd numbers.

Using '<' will exclude 10 from the output.

The loop starts at 2 and continues while i is less than or equal to 10 to print even numbers.

5fill in blank

hard

Fill all three blanks to create a loop that prints numbers from 10 down to 1.

Java

for(int i = [1]; i [2] 1; i[3]) {
    System.out.println(i);
}

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

A10

B>=

C--

D++

Attempts:

3 left

💡 Hint

Common Mistakes

Using '++' will cause an infinite loop counting up.

Using '<=' will never run the loop since 10 is not less than or equal to 1.

The loop starts at 10, continues while i is greater than or equal to 1, and decreases i by 1 each time.