Java Loops

while, do-while, for and for-each.

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while (condition) { }
do { } while (condition);: runs at least once
for (int i = 0; i < 5; i++) { }
for (String s : array) { }: the for-each loop

break exits a loop; continue skips to the next iteration.

Key Takeaways: Java Loops

Mastering Java Loops helps you write clean and reliable Java code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

Java Loops Code Example

Java

public class Main {
    public static void main(String[] args) {
        for (int i = 1; i <= 3; i++) {
            System.out.println("9 x " + i + " = " + 9 * i);
        }

        int n = 3;
        while (n > 0) {
            System.out.println("Countdown " + n);
            n--;
        }

        String[] langs = {"Java", "Kotlin", "Scala"};
        for (String lang : langs) {
            if (lang.equals("Kotlin")) continue;
            System.out.println(lang);
        }
    }
}

Output

9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
Countdown 3
Countdown 2
Countdown 1
Java
Scala

Run this example on your own computer. The "Get Started" lesson shows how to set it up.

Java Loops Practice Exercises

Check what you learned in “Java Loops”.

/ 2 solved

Fill in the blank

Loop over every element (for-each).

for (String s  names) { }

✓ Correct! Not quite. Try again.

Multiple choice

Which keyword exits a loop early?

break exit stop return-loop

✓ Correct! Not quite. Try again.

to save your exercise progress.

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Java If...Else & Switch

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Java Arrays

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Java Loops

💡 Key Takeaways: Java Loops

Java Loops Code Example

Java Loops Practice Exercises

Key Takeaways: Java Loops