Free Java Courses & Certificates [2026] | Coursera

Popular Free Java Courses

Status: Free Trial
LearnQuest
Introduction to Java
Skills you'll gain: Eclipse (Software), Java, Java Programming, Integrated Development Environments, Development Environment, Software Installation, Computer Programming, Programming Principles, Program Development, Object Oriented Programming (OOP)
4.6
Rating, 4.6 out of 5 stars
2.2K reviews
Beginner · Course · 1 - 4 Weeks
Status: Free
Princeton University
Computer Science: Programming with a Purpose
Skills you'll gain: Programming Principles, Computer Programming, Object Oriented Programming (OOP), Performance Tuning, Data Structures, Java Programming, Java, Computational Thinking, Computer Science, Algorithms, Animations, Simulations, Debugging
4.7
Rating, 4.7 out of 5 stars
1.3K reviews
Beginner · Course · 1 - 3 Months
Status: Free Trial
Status: AI skills
IBM
IBM Java Developer
Skills you'll gain: Prompt Engineering, Software Development Life Cycle, Cloud-Native Computing, Software Architecture, Hibernate (Java), Database Design, Responsive Web Design, Docker (Software), Containerization, Git (Version Control System), GitHub, Object Oriented Programming (OOP), Microservices, CI/CD, Restful API, Java Programming, Engineering Software, Version Control, Database Management, Software Design
4.6
Rating, 4.6 out of 5 stars
7K reviews
Beginner · Professional Certificate · 3 - 6 Months
Status: Free
Princeton University
Computer Science: Algorithms, Theory, and Machines
Skills you'll gain: Theoretical Computer Science, Data Structures, Computer Science, Computer Architecture, Algorithms, Programming Principles, Computational Logic, Computational Thinking, Java Programming, Computer Hardware
4.7
Rating, 4.7 out of 5 stars
739 reviews
Intermediate · Course · 1 - 3 Months
Status: Free Trial
Codio
Core Java
Skills you'll gain: Apache Maven, JSON, JUnit, Java Programming, Java, Restful API, Integrated Development Environments, Programming Principles, Package and Software Management, Data Structures, Object Oriented Programming (OOP), Network Protocols, Unit Testing, Style Guides
4.7
Rating, 4.7 out of 5 stars
37 reviews
Intermediate · Course · 1 - 4 Weeks
Status: Free
Princeton University
Algorithms, Part I
Skills you'll gain: Data Structures, Algorithms, Java, Performance Testing, Computer Programming, Java Programming, Theoretical Computer Science, Object Oriented Programming (OOP)
4.9
Rating, 4.9 out of 5 stars
12K reviews
Intermediate · Course · 3 - 6 Months

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Status: Free
Princeton University
Algorithms, Part II
Skills you'll gain: Graph Theory, Data Structures, Algorithms, Theoretical Computer Science, Computational Thinking, Computer Programming, Network Routing, Cryptography, Java Programming, Linear Algebra
4.9
Rating, 4.9 out of 5 stars
2K reviews
Intermediate · Course · 3 - 6 Months
Status: Free Trial
Codio
Java Basic Structures: Arrays, Strings, and Files
Skills you'll gain: Data Import/Export, Java Programming, Java, Computer Programming, Data Structures, Object Oriented Programming (OOP), File Management, Integrated Development Environments, Computer Science
4.6
Rating, 4.6 out of 5 stars
44 reviews
Beginner · Course · 1 - 4 Weeks
Status: Free Trial
Codio
Java Basics: Selection and Iteration
Skills you'll gain: Debugging, Java Programming, Java, Programming Principles, Computer Programming, Computer Science, Data Structures, Data Storage
4.5
Rating, 4.5 out of 5 stars
118 reviews
Beginner · Course · 1 - 4 Weeks
Status: Free Trial
Codio
Object-Oriented Java: Inheritance and Encapsulation
Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Computer Programming, Data Validation, Maintainability, Computer Science
4.1
Rating, 4.1 out of 5 stars
21 reviews
Intermediate · Course · 1 - 4 Weeks
Status: Free Trial
University of California San Diego
Learn to Teach Java: Inheritance and Recursion
Skills you'll gain: Java Programming, Java, Pedagogy, Debugging, Object Oriented Programming (OOP), Computer Programming, Computational Thinking, Cultural Responsiveness, Integrated Development Environments, Algorithms
4.7
Rating, 4.7 out of 5 stars
10 reviews
Beginner · Course · 1 - 3 Months
Status: Free Trial
Codio
Java Object Basics: Functions, Recursion, and Objects
Skills you'll gain: Object Oriented Programming (OOP), Software Documentation, Java Programming, Java, Computer Programming, Programming Principles, Computational Thinking, Computer Science
4.1
Rating, 4.1 out of 5 stars
21 reviews
Intermediate · Course · 1 - 4 Weeks

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In summary, here are 10 of our most popular free courses

Introduction to Java: LearnQuest
Computer Science: Programming with a Purpose: Princeton University
IBM Java Developer: IBM
Computer Science: Algorithms, Theory, and Machines: Princeton University
Core Java: Codio
Algorithms, Part I: Princeton University
Algorithms, Part II: Princeton University
Java Basic Structures: Arrays, Strings, and Files: Codio
Java Basics: Selection and Iteration: Codio
Object-Oriented Java: Inheritance and Encapsulation: Codio