Learn Java

Learn to code in Java — a robust programming language used to create software, web and mobile apps, and more.

4.35 out of 5 stars
1,446,405 learners enrolled
  • Skill level

  • Time to complete

    Approx. 25 hours
  • Certificate of completion

    Included with paid plans
  • Prerequisites


About this course

Popular for its versatility and ability to create a wide variety of applications, learning Java opens up your possibilities when coding. With it, you’ll be able to develop large systems, software, and mobile applications — and even create mobile apps for Android. Learn important Java coding fundamentals and practice your new skills with real-world projects.

Skills you'll gain

  • Build core programming concepts

  • Learn object-oriented concepts

  • Create Java projects


16 lessons • 14 projects • 15 quizzes
The platform

Hands-on learning

Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Animated demonstration of running code in Codecademy's learning environment

Learn Java course ratings and reviews

4.35 out of 5 stars
8,202 ratings
  1. 5 stars
  2. 4 stars
  3. 3 stars
  4. 2 stars
  5. 1 star
  • The Intro to Java course was able to break down multiple concepts into easily digestible chunks. I actually felt like I was practicing the information the moment I was learning it, as opposed to just watching a video and trying to remember what was said afterwards.
    Mike M.
    Verified Learner
  • Very organized course overall, well-structured sub-tasks and great quality tips and notes in every lesson. For someone with a Codecademy subscription, and no background in Java, this course does the job of setting up the foundations and developing a critical-thinking repertoire to tackle problems in Java.
    Elie C.
    Verified Learner
  • This is the best java course I have ever done, it's beginner friendly but also have some really cool projects. I personally love Codecademy way to teaching. This course have boosted my confidence and I have already started the intermediate course. I highly recommend this course to every one who is starting in this field.
    Shubham V.
    Verified Learner

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Unlock additional features with a paid plan

  • Practice Projects

    Guided projects that help you solidify the skills and concepts you're learning.
  • Assessments

    Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.
  • Certificate of Completion

    Earn a document to prove you've completed a course or path that you can share with your network.

Join over 50 million learners and start Learn Java today!


Frequently asked questions about Java

  • Java is an open-source, general-purpose programming language known for its versatility and stability. It’s used for everything from building websites to operating systems and wearable devices. You can even find Java in outer space, running the Mars rover.