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.

Peking University
Skills you'll gain: Object Oriented Design, Unified Modeling Language, Object Oriented Programming (OOP), Software Engineering, Software Design, Program Development, Software Development Methodologies, Java, Software Development, Software Architecture, Software Design Patterns, C++ (Programming Language), Systems Analysis, Requirements Analysis
Beginner · Course · 3 - 6 Months

University of Michigan
Skills you'll gain: C++ (Programming Language), C (Programming Language), Object Oriented Programming (OOP), Data Structures, System Programming, Computer Programming, Software Design, Python Programming, Java Programming, Algorithms, Debugging
Intermediate · Course · 1 - 3 Months
Skills you'll gain: Django (Web Framework), Frontend Integration, React.js, API Testing, Authentications, Performance Tuning, Scalability, Full-Stack Web Development, Frontend Performance, Unit Testing, Development Testing, Software Testing, Restful API, Javascript, Python Programming
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Apache Kafka, Apache Hadoop, Apache Spark, Real Time Data, Scala Programming, Data Integration, Command-Line Interface, Apache Hive, Big Data, Applied Machine Learning, Data Processing, Apache, System Design and Implementation, Apache Cassandra, Data Pipelines, Java, Distributed Computing, IntelliJ IDEA, Application Deployment, Enterprise Application Management
Intermediate · Specialization · 3 - 6 Months

LearnKartS
Skills you'll gain: Git (Version Control System), GitHub, Bitbucket, Version Control, Software Versioning, GitLab, Software Configuration Management, Collaborative Software, Integrated Development Environments, Software Development, Code Review, IntelliJ IDEA, Eclipse (Software), Application Lifecycle Management, Linux, Command-Line Interface
Beginner · Specialization · 1 - 3 Months

Simplilearn
Skills you'll gain: Data Structures, C (Programming Language), Programming Principles, Data Management, Algorithms, Computer Programming, File I/O
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: SAP S/4HANA, Business Logic, SAP Applications, Business Reporting, Debugging, Object Oriented Design, Report Writing, Programming Principles, Object Oriented Programming (OOP), User Interface (UI), Program Development, UI Components, Test Tools, Data Entry, Eclipse (Software), Software Engineering, Maintainability, Development Environment, Data Structures
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Object-Relational Mapping, Hibernate (Java), Apache Maven, Model View Controller, Spring Framework, Relational Databases, Database Design, MySQL, Java, Full-Stack Web Development, Database Development, Authentications, Web Applications, Application Frameworks, Back-End Web Development, Data Validation, Data Modeling
Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: jQuery, Javascript, Web Applications
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React Redux, React.js, Cascading Style Sheets (CSS), Web Components, JavaScript Frameworks, UI Components, HTML and CSS, Routing Protocols, Front-End Web Development, User Interface (UI), Web Frameworks, Maintainability, Authentications, Web Development Tools, Application Frameworks, Application Programming Interface (API), Web Design, Restful API, Javascript, Web Development
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Blockchain, Frontend Integration, Transaction Processing, Event-Driven Programming, Front-End Web Development, JavaScript Frameworks, Event Monitoring, Full-Stack Web Development, Development Environment, Web Development, Web Applications, Program Development, React.js, Emerging Technologies, Application Development, Javascript, FinTech
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Jest (JavaScript Testing Framework), User Acceptance Testing (UAT), Cucumber (Software), Postman API Platform, Software Testing, Behavior-Driven Development, Test Tools, Selenium (Software), Test Driven Development (TDD), API Testing, Unit Testing, Performance Testing, Functional Testing, Test Automation, Web Development Tools, Usability Testing, User Interface (UI), Test Case, Javascript
Beginner · Course · 1 - 4 Weeks