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.

Skills you'll gain: Git (Version Control System), Selenium (Software), Version Control, GitHub, Jenkins, Continuous Integration, CI/CD, Test Automation, Web Development Tools, Browser Compatibility, Test Data, File I/O, Data Access
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Software Design Patterns, Object Oriented Design, Object Oriented Programming (OOP), Javascript, Software Design, Maintainability, Application Development, Event-Driven Programming, Prototyping, Context Management
Advanced · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Apache Maven, Build Tools, Continuous Integration, Version Control, Java, Software Versioning, Package and Software Management, Mac OS, Software Installation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Exploitation techniques, Penetration Testing, Secure Coding, Web Applications, Full-Stack Web Development, Vulnerability Assessments, Application Security, Angular, Ajax, Javascript
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Responsive Web Design, Dashboard Creation, Cascading Style Sheets (CSS), Web Applications, HTML and CSS, Javascript, Wireframing, Restful API, Application Programming Interface (API), Real Time Data, Software Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Event-Driven Programming, Web Applications, Javascript, Data Import/Export, Data Management, Web Development, Data Mapping, User Interface (UI), Web Content Accessibility Guidelines, Interactive Design, Data Structures, Computational Logic, Data Validation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React.js, Front-End Web Development, Javascript, Web Development, Software Engineering
Intermediate · Guided Project · Less Than 2 Hours

★ 4.9 (21) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Apache Hadoop, Real Time Data, Apache Spark, Apache Kafka, Data Integration, AWS Kinesis, Apache Hive, Data Pipelines, Big Data, Applied Machine Learning, Systems Design, System Design and Implementation, Distributed Computing, Query Languages, Data Processing, NoSQL, MongoDB, Data Import/Export, SQL, Scalability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Web Design and Development, Web Development, Browser Compatibility, Web Design, Cascading Style Sheets (CSS), Web Content Accessibility Guidelines, Frontend Integration, Computer Graphics, Front-End Web Development, Semantic Web, Web Content, Usability, Javascript, User Experience, Data Validation
★ 4.7 (13) · Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Web Applications, React.js, Javascript and jQuery, Javascript, Cascading Style Sheets (CSS)
Intermediate · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: Object-Relational Mapping, Java Programming, Database Design, Authentications, Programming Principles
Intermediate · Course · 1 - 4 Weeks