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.

Scrimba
Skills you'll gain: Computational Thinking, Algorithms, Program Development, Software Development, Computer Programming, Data Structures, Javascript, Computer Science, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Unit Testing, Code Review, Software Development Tools, Test Automation, Software Documentation, Maintainability, Web Applications, Application Development, Generative AI, Software Development, Jest (JavaScript Testing Framework), Javascript, ChatGPT, GitHub
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Angular, Responsive Web Design, HTML and CSS, Web Design, Web Applications, Web Development Tools, Javascript
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Cloud Applications, Application Development, Google Cloud Platform, API Gateway, Application Programming Interface (API), Cloud API, Cloud-Based Integration, Serverless Computing, Authentications, OAuth, Identity and Access Management, Secure Coding, Microservices, Node.JS, Restful API, Event-Driven Programming, Authorization (Computing), Natural Language Processing
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Merchandising, Product Assortment, E-Commerce, Web Applications, Scalability, Business Technologies, Technology Solutions, Systems Integration, Application Programming Interface (API), Javascript
Beginner · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Git (Version Control System), React.js, Version Control, Web Development Tools, GitHub, Debugging, Software Development Tools, Node.JS, Development Environment, Software Testing, Continuous Integration, Unit Testing, Maintainability, Application Development, Server Side, UI Components, Javascript, Secure Coding, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Event-Driven Programming, Web Development Tools, HTML and CSS, Web Development, Javascript, Web Applications, Web Design and Development, Cascading Style Sheets (CSS), Programming Principles
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Amazon Elastic Compute Cloud, Amazon Web Services, Cloud Hosting, Front-End Web Development, React.js, Web Design and Development, Javascript, Web Applications, Web Development, Cloud Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Applications, Google Cloud Platform, Data Store, Application Development, Cloud API, Cloud Storage, Application Design, Cloud Services, Data Storage, Node.JS, Scalability
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: React Native, Mobile Development, Responsive Web Design, Cross Platform Development, iOS Development, UI Components, Android Development, Application Development, Application Programming Interface (API), Development Environment, Javascript, Data Storage, Data Management, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: jQuery, Ajax, Javascript and jQuery, JSON, Animations, Event-Driven Programming, Debugging, UI Components, Application Programming Interface (API), Web Applications, Web Development Tools, Responsive Web Design, Javascript, HTML and CSS, Interaction Design, Game Design, Cascading Style Sheets (CSS), Data Validation, Hypertext Markup Language (HTML), User Interface (UI) Design
Intermediate · Specialization · 3 - 6 Months

Northeastern University
Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, Web Design, HTML and CSS, Web Content Accessibility Guidelines, User Interface (UI), Hypertext Markup Language (HTML), Front-End Web Development, User Interface and User Experience (UI/UX) Design, Javascript, Usability, Web Applications, Semantic Web, Data Validation
Beginner · Course · 1 - 3 Months