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 California, Irvine
Skills you'll gain: Object Oriented Programming (OOP), C (Programming Language), Python Programming, Data Import/Export, Memory Management, File I/O, Computational Logic, Network Protocols, Package and Software Management
★ 4.6 (2.5K) · Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Restful API, Spring Framework, Spring Boot, Hibernate (Java), API Design, Verification And Validation, Development Testing, Authentications, Application Programming Interface (API), Object-Relational Mapping, Maintainability, Secure Coding, Data Persistence, Application Frameworks, Authorization (Computing), Application Design, YAML, Role-Based Access Control (RBAC), Endpoint Security, Business Logic
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Test Driven Development (TDD), Unit Testing, Software Testing, Testability, Java, Test Case, Program Development, Software Design
★ 3.6 (17) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Plot (Graphics), Scientific Visualization, Statistical Visualization, Mathematical Software, Data Manipulation, Jupyter, Python Programming, Numerical Analysis, Data Wrangling, Data Science, Other Programming Languages, Java, R Programming, Interoperability, Java Programming, Programming Principles, Computer Programming, Development Environment, C (Programming Language), Machine Learning
Intermediate · Course · 1 - 3 Months

University of Minnesota
Skills you'll gain: Software Testing, JUnit, Verification And Validation, Unit Testing, Test Case, Test Automation, Development Testing, Test Planning, Test Tools, White-Box Testing, Code Coverage, Software Quality Assurance, Functional Testing, Test Script Development, Systems Development Life Cycle, Test Data, Technical Communication
★ 4.3 (830) · Intermediate · Course · 1 - 4 Weeks

Meta
Skills you'll gain: Jest (JavaScript Testing Framework), React.js, Event-Driven Programming, UI Components, Web Development Tools, Code Reusability, Front-End Web Development, JavaScript Frameworks, Application Programming Interface (API), Web Applications, Unit Testing, Application Development, Software Design Patterns, Javascript, Development Environment, Context Management, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS), Dataflow
★ 4.7 (3.7K) · Intermediate · Specialization · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Apache Spark, Apache Hadoop, Scala Programming, Distributed Computing, Big Data, Data Manipulation, Data Processing, Performance Tuning, Data Persistence, Data Transformation, SQL, Data Import/Export
★ 4.6 (2.6K) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Vibe coding, Prompt Engineering, Prompt Patterns, AWS SageMaker, AI Integrations, Generative AI Agents, Amazon Web Services, Infrastructure as Code (IaC), Prompt Engineering Tools, AI Security, AI Enablement, Generative AI, AI Personalization, AWS CloudFormation, AI Workflows, Computer Programming, Computer Programming Tools, Artificial Intelligence, Autoencoders, Building Codes
Beginner · Specialization · 3 - 6 Months

John Wiley & Sons
Skills you'll gain: Threat Modeling, Secure Coding, Application Security, DevSecOps, Open Web Application Security Project (OWASP), Cybersecurity, Security Testing, Mobile Security, Software Development Life Cycle, Cryptographic Protocols, Security Controls, Computer Security, Vulnerability Assessments, Continuous Monitoring, Vulnerability Management, Computer Programming, C and C++, Java Programming, Python Programming, C (Programming Language)
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Eclipse (Software), Object Oriented Design, Program Development, Code Reusability, Computer Programming
★ 4.7 (24) · Intermediate · Guided Project · Less Than 2 Hours

University of Maryland, College Park
Skills you'll gain: Android Development, Mobile Development, Android Studio, Android (Operating System), Application Development, User Interface (UI), Application Design, UI Components, Java, Development Environment, Authorization (Computing), Application Lifecycle Management
★ 4.5 (686) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Restful API, API Design, API Testing, Spring Boot, Authentications, Test Automation, JSON, Application Programming Interface (API), Test Script Development, Application Deployment, Spring Framework, Object-Relational Mapping, Web Services, Software Quality Assurance, Object Oriented Design, Software Testing, Business Logic, Back-End Web Development, Java Programming, Java
★ 4.9 (60) · Beginner · Specialization · 1 - 3 Months