Java courses can help you learn object-oriented programming, data structures, exception handling, and multithreading concepts. You can build skills in writing efficient algorithms, debugging code, and developing user interfaces. Many courses introduce tools like Eclipse and IntelliJ IDEA, which are commonly used for coding and testing Java applications, along with frameworks such as Spring and Hibernate that facilitate web development and database management.

University of Pennsylvania
Skills you'll gain: File I/O, Matplotlib, Object Oriented Design, Java, Object Oriented Programming (OOP), Data Analysis, Unit Testing, Pandas (Python Package), Java Programming, Eclipse (Software), Application Development, Data Visualization, Data Structures, Data Science, Data Cleansing, Debugging, Programming Principles, Computer Programming Tools, Python Programming, Computer Programming
★ 4.5 (1.9K) · Beginner · Specialization · 3 - 6 Months

Vanderbilt University
Skills you'll gain: Prompt Engineering, ChatGPT, Prompt Patterns, Generative AI Agents, LLM Application, AI literacy, Agentic Workflows, AI Orchestration, OpenAI API, Java, Java Programming, AI powered creativity, Agentic systems, Generative AI, Artificial Intelligence, Tool Calling, Application Development, Business Logic, Coordination
★ 4.8 (8.3K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: JUnit, Test Driven Development (TDD), Version Control, Git (Version Control System), GitHub, Performance Tuning, Data Structures, Java Programming, Algorithms, Software Testing, Java, Test Automation, Test Case, Software Development, Scalability
★ 4 (64) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Responsible AI, MLOps (Machine Learning Operations), Data Preprocessing, Model Deployment, Jenkins, Apache Mahout, AI Security, Applied Machine Learning, Classification Algorithms, Java, Java Programming, Federated Learning, Apache Spark, Machine Learning Software, Application Deployment, Deep Learning, Machine Learning, Spring Boot, Natural Language Processing, Reinforcement Learning
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Apache Maven, File I/O, Build Tools, Data Import/Export, Object Oriented Programming (OOP), JSON, Java Programming, Debugging, JUnit, Code Reusability, Software Documentation, Programming Principles, Data Structures, File Systems, Computer Programming, Java, Data Validation, Network Protocols, Unit Testing, Computer Science
★ 4.5 (200) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Restful API, Application Deployment, Microservices, Docker (Software), Spring Boot, Spring Framework, Containerization, CI/CD, API Design, Application Programming Interface (API), Java Programming, Hibernate (Java), Back-End Web Development, Java, Software Design, Database Application, Application Security, Authentications, Software Development, IntelliJ IDEA
★ 4 (21) · Intermediate · Course · 1 - 4 Weeks

Rice University
Skills you'll gain: Apache Kafka, Apache Spark, Apache Hadoop, Event-Driven Programming, Distributed Computing, Java Programming, Dataflow, Java, Scala Programming, Data Structures, C and C++, Servers, Application Frameworks, Computer Programming, Algorithms
★ 4.6 (1.6K) · Intermediate · Specialization · 3 - 6 Months

EDUCBA
Skills you'll gain: Spring Boot, Application Development, Redis, Java, Application Design, Web Development, Web Applications, Development Testing, Databases, Data Integration, Database Application, Application Security, Unit Testing, Relational Databases, Data Access, Integration Testing, Hypertext Markup Language (HTML)
★ 4.4 (49) · Intermediate · Course · 1 - 3 Months

Heriot-Watt University
Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Computer Programming, Application Development, Program Development, Programming Principles, Computational Logic, Software Development, Software Development Life Cycle
★ 4.9 (8) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Computer Programming, Virtual Machines, Memory Management
★ 4.7 (538) · Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: JUnit, File I/O, Java Programming, Object Oriented Programming (OOP), Java, Unit Testing, Code Reusability, Maintainability, Software Development, Secure Coding, Software Testing, Computer Programming, Application Development, Authentications, Application Security, Android Development, Debugging, Solution Design, Design Strategies, Design Elements And Principles
★ 4.6 (85) · Beginner · Specialization · 1 - 3 Months

Rice University
Skills you'll gain: Java Programming, Dataflow, Java, C and C++, Application Frameworks
★ 4.6 (1.2K) · Intermediate · Course · 1 - 3 Months