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.

LearnKartS
Skills you'll gain: Git (Version Control System), GitHub, Version Control, Integrated Development Environments, IntelliJ IDEA, Software Development Tools, Eclipse (Software), Code Review, CI/CD, Microsoft Visual Studio, Development Environment, Software Versioning, Collaborative Software, Continuous Integration, Software Development, Linux, DevOps, Release Management, Open Source Technology, Workflow Management
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: IntelliJ IDEA, Software Design, Object Oriented Programming (OOP), Apache Maven, Object Oriented Design, Integrated Development Environments, Software Development Tools, Build Tools, Version Control, Software Architecture, Git (Version Control System), GitHub, Data Import/Export, Development Environment, Java, Program Development, Kotlin, Debugging, Java Programming, Software Installation
Intermediate · Specialization · 1 - 3 Months

Illinois Tech
Skills you'll gain: Relational Databases, Database Application, Database Management, Database Development, SQL, Databases, Database Systems, MySQL, Database Management Systems, Database Software, Database Design, Transaction Processing, Stored Procedure, Data Access, Application Development, Java, Data Integrity, Performance Tuning
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Frontend Integration, Restful API, Spring Boot, Full-Stack Web Development, React.js, IntelliJ IDEA, Spring Framework, Object-Relational Mapping, Web Services, JavaScript Frameworks, Front-End Web Development, YAML, Web Applications, Back-End Web Development, Data Access, Database Application, User Interface (UI), Context Management, Application Programming Interface (API), Databases
Intermediate · Specialization · 1 - 4 Weeks
Coursera
Skills you'll gain: JUnit, MLOps (Machine Learning Operations), CI/CD, Continuous Integration, Jenkins, Test Automation, Unit Testing, Continuous Deployment, DevOps, Debugging, Code Coverage, Test Engineering, Data Pipelines, Test Data
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Pseudocode, Responsive Web Design, Computational Thinking, LinkedIn, Cascading Style Sheets (CSS), Front-End Web Development, React.js, HTML and CSS, Debugging, Algorithms, Interviewing Skills, UI Components, Professional Development, Programming Principles, Web Presence, JavaScript Frameworks, Web Development Tools, Web Development, Javascript, Software Development
Intermediate · Specialization · 1 - 3 Months
Skills you'll gain: Build Tools, CI/CD, Software Development Tools, Java, Gradle, Java Programming, Apache Maven, Machine Learning Software, MLOps (Machine Learning Operations), Package and Software Management, Applied Machine Learning, Process Driven Development, Dependency Analysis, Performance Tuning
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Web Development Tools, Development Environment, Frontend Integration, Software Development Tools, Program Development, Integrated Development Environments, Application Deployment, Transaction Processing, Application Design, Front-End Web Development, Event-Driven Programming, Development Testing, Javascript, Network Architecture
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Database Application, Database Development, Full-Stack Web Development, Web Applications, Model View Controller, Authentications, Authorization (Computing), Business Logic, Dashboard Creation
Beginner · Course · 1 - 4 Weeks
Coursera
Skills you'll gain: Model Evaluation, MLOps (Machine Learning Operations), Classification Algorithms, Model Deployment, Machine Learning Software, Applied Machine Learning, Maintainability, Machine Learning Algorithms, Java, Software Design Patterns, Logistic Regression, Business Metrics, Benchmarking, Matrix Management, Business
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React Redux, React.js, Cascading Style Sheets (CSS), UI Components, JavaScript Frameworks, Front-End Web Development, User Interface (UI), Web Frameworks, Maintainability, Authentications, Web Development Tools, Application Frameworks, Javascript, Application Programming Interface (API), Web Design, Frontend Performance, Authorization (Computing), Web Development, Web Applications, Middleware
Intermediate · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, Object Oriented Programming (OOP), Unified Modeling Language, JUnit, Software Testing, Java, Java Programming, Unit Testing, Software Design, Software Development, Test Driven Development (TDD), Diagram Design
Build toward a degree
Intermediate · Course · 1 - 3 Months