Free
Course

Learn Intermediate Java

Dive deeper into Java — one of the world’s most popular programming languages.

4.31 out of 5 stars
This course includes
39,678 learners enrolled
This course includes
  • Skill level

    Intermediate
  • Time to complete

    Average based on combined completion rates — individual pacing in lessons, projects, and quizzes may vary
     
    10 hours
  • Projects

    5
  • Prerequisites

    1 course
     
    We suggest you complete the following courses before you get started with Learn Intermediate Java:
    • Learn Java

About this course

Take your Java skills beyond the basics with Intermediate Java. This course helps you write cleaner, more efficient code while deepening your understanding of core Java concepts. You’ll explore advanced topics like collections, threading, and testing frameworks, setting the foundation for creating robust and professional-grade Java applications.

Skills you'll gain

  • Handling input and output in Java

  • Understanding Java collections and the Collections framework

  • Implementing threading for complex programs

  • Managing resources effectively with context managers

  • Writing tests using Java’s JUnit library

Syllabus

8 lessons • 5 projects • 8 quizzes
  • Certificate of completion available with Plus or Pro

    Earn a certificate of completion and showcase your accomplishment on your resume or LinkedIn.

The platform

Hands-on learning

Animated GIF of an AI provided error explanation within Codecademy's learning environment
An AI-generated hint within the instructions of a Codecademy project
Animated GIF of Codecademy's Job Readiness Checker tool generating a compatibility report for a senior software engineer role
Animated GIF of building a phone screen interview using Codecademy's Interview Simulator
A fill-in-the-blank JavaScript question in a Codecademy assessment
Meet the creator of the course
Alisha Grama
Senior Instructional Designer, Computer Science at Codecademy
Alisha is a Senior Instructional Designer in the computer science domain at Codecademy. Alisha majored in Computer Science and minored in Ethics at the University of Rochester, where she gained experience as a Teaching Assistant. Before joining Codecademy, she taught STEM concepts to secondary students, including as the Lead Algebra Teacher at a Brooklyn charter school.

Earn a certificate of completion

Show your network you've done the work by earning a certificate of completion for each course or path you finish.
  • Show proofReceive a certificate that demonstrates you've completed a course or path.
  • Build a collectionThe more courses and paths you complete, the more certificates you collect.
  • Share with your networkEasily add certificates of completion to your LinkedIn profile to share your accomplishments.

Learn Intermediate Java course ratings and reviews

4.31 out of 5 stars
502 ratings
  1. 5 stars
  2. 4 stars
  3. 3 stars
  4. 2 stars
  5. 1 star
  • The progress I have made since starting to use codecademy is immense! I can study for short periods or long periods at my own convenience - mostly late in the evenings.
    Chris
    Codecademy Learner @ USA
  • I felt like I learned months in a week. I love how Codecademy uses learning by practice and gives great challenges to help the learner to understand a new concept and subject.
    Rodrigo
    Codecademy Learner @ UK
  • Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.
    John-Andrew
    Codecademy Learner @ USA

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Join over 50 million learners and start Learn Intermediate Java today!

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.