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Java Exercises

Master Java syntax through 100 interactive fill-in-the-blank challenges. From variables to advanced logic, practice until it's second nature.

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Exercise Categories

arrays

5 Exercises

Interactive practice for arrays in Java.

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classes

10 Exercises

Interactive practice for classes in Java.

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collections

5 Exercises

Interactive practice for collections in Java.

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conditionals

10 Exercises

Interactive practice for conditionals in Java.

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exceptions

5 Exercises

Interactive practice for exceptions in Java.

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generics

5 Exercises

Interactive practice for generics in Java.

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inheritance

5 Exercises

Interactive practice for inheritance in Java.

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interfaces

5 Exercises

Interactive practice for interfaces in Java.

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loops

10 Exercises

Interactive practice for loops in Java.

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methods

10 Exercises

Interactive practice for methods in Java.

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oop

5 Exercises

Interactive practice for oop in Java.

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streams

5 Exercises

Interactive practice for streams in Java.

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variables

10 Exercises

Interactive practice for variables in Java.

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Why use Learn2Code for
Java practice?

Active Recall

Don't just watch videos. Thinking about the missing code piece activates your brain much more effectively than passive learning.

Instant Feedback

Every choice you make gives you detailed, personalized feedback. You'll understand why a distractor is wrong immediately.

Zero Friction

No environment to set up. No accounts to create. Just pick a topic and start typing code.

// Example Java Exercise
function calculateTotal(price, tax) {
  const total = price * (1 + tax);
  return total;
}
sum
total
result

Frequently Asked Questions

Are these Java exercises free?
Yes, all Java exercises on Learn2Code are 100% free and require no sign-up. We believe the best way to learn is by doing, so we've made our interactive practice accessible to everyone.
What topics are covered in the Java practice?
Our Java curriculum covers everything from basic variables and methods to advanced concepts like streams. Each category features multiple exercises ranging from beginner to advanced difficulty.
How does the fill-in-the-blank format help?
Fill-in-the-blank exercises force you to read and understand existing code context before providing the missing piece. This builds "code fluency"—the ability to recognize and write syntax patterns quickly and accurately, which is essential for professional development.

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