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Join Exercism’s Java Track for access to 149 exercises grouped into 26 Java Concepts, with automatic analysis of your code and personal mentoring, all 100% free.
class Greeter {
String getGreeting() {
return "Hello, World!";
}
}
Get better at programming through fun, rewarding coding exercises that test your understanding of concepts with Exercism.
Convert modern Arabic numbers into Roman numerals.
Implement the logic of the hangman game using functional reactive programming.
Convert a number into its corresponding raindrop sounds - Pling, Plang and Plong.
Java is a modern, fast-evolving language with releases every 6 months.
Every expression has a type known at compile time.
Java is primarily an object-oriented language, but has many functional features introduced in v1.8.
Java is used for a variety of workloads like web, cloud, mobile and game applications.
Java was designed to be cross-platform with the slogan "Write once, run anywhere".
Java programs perform automatic memory management for their lifecycles.
Every language has its own way of doing things. Java is no different. Our mentors will help you learn to think like a Java developer and how to write idiomatic code in Java. Once you've solved an exercise, submit it to our volunteer team, and they'll give you hints, ideas, and feedback on how to make it feel more like what you'd normally see in Java - they'll help you discover the things you don't know that you don't know.
Learn more about mentoring
The Java track on Exercism has 26 concepts and 149 exercises to help you write better code. Discover new exercises as you progress and get engrossed in learning new concepts and improving the way you currently write.
See all Java exercises
The best part, it’s 100% free for everyone.
