Best Java Courses

The most-watched free Java course — covers OOP, data structures, collections, generics, and file I/O. Best free starting point for Java.

Mosh's Java intro is clear, well-paced, and covers the core concepts you need before moving to Spring Boot.

Spring Boot is the framework you'll use in virtually every Java backend job. This free course builds a REST API with JPA, PostgreSQL, and Docker.

The most comprehensive Java course available — 800k+ students. Covers Java 17 features, data structures, algorithms, concurrency, and databases.

Duke University's five-course Java specialization — teaches programming fundamentals through real projects including data analysis, web scraping, and cryptography.

The most-watched free Java course — covers OOP, data structures, collections, generics, and file I/O. Best free starting point for Java.

Mosh's Java intro is clear, well-paced, and covers the core concepts you need before moving to Spring Boot.

The most comprehensive Java course available — 800k+ students. Covers Java 17 features, data structures, algorithms, concurrency, and databases.

Duke University's five-course Java specialization — teaches programming fundamentals through real projects including data analysis, web scraping, and cryptography.

Duke's standalone Java course focused on practical problem solving — CSV analysis, image processing, and algorithmic thinking. First course of the Java specialization.

University of Helsinki's free Java MOOC — 14 weeks of rigorous exercises covering OOP, data structures, generics, and algorithms. One of the best free Java courses available.

Spring Boot is the framework you'll use in virtually every Java backend job. This free course builds a REST API with JPA, PostgreSQL, and Docker.

The definitive Spring Boot course — covers REST APIs, Spring Security, JPA/Hibernate, and microservices. Required if you're targeting Java backend roles.