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.

Universidad de los Andes
Skills you'll gain: NoSQL, Big Data, File Systems, Data Infrastructure, Apache Hadoop, Data Architecture, Distributed Computing, Scalability, Database Systems, Cloud Computing, Apache Spark, Public Cloud, Data Processing, Data Storage Technologies, Cloud Services, Data Storage, Data Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Node.JS, Web Development, HTML and CSS, Front-End Web Development, Web Servers, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS), Web Applications, JavaScript Frameworks, Server Side, Javascript, Middleware, Back-End Web Development
Intermediate · Guided Project · Less Than 2 Hours

Universidad de los Andes
Skills you'll gain: TypeScript, Javascript, Scripting, Hypertext Markup Language (HTML), Object Oriented Programming (OOP), Web Applications
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Ajax, JSON, Javascript, Application Programming Interface (API), Web Applications, Secure Coding, Application Security
★ 4.8 (8) · Intermediate · Course · 1 - 4 Weeks

★ 4.6 (22) · Beginner · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: PySpark, Apache Hadoop, Apache Spark, Big Data, Apache Hive, Data Lakes, Analytics, Data Pipelines, Data Processing, Data Import/Export, Data Infrastructure, Linux Commands, Linux, File Systems, Data Management, Distributed Computing, Command-Line Interface, Relational Databases, Java, C++ (Programming Language)
Intermediate · Specialization · 1 - 4 Weeks

Board Infinity
Skills you'll gain: CI/CD, Jenkins, Docker (Software), Continuous Integration, Containerization, Cloud-Native Computing, Scalability, Application Deployment, Cloud Deployment, Continuous Deployment, Spring Framework, Spring Boot, DevOps, Prometheus (Software), Amazon CloudWatch, AWS Identity and Access Management (IAM), Identity and Access Management, Load Balancing, OAuth, Performance Tuning
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Test Automation, Selenium (Software), Test Script Development, Unit Testing, Test Case, Software Testing, Test Execution Engine, Test Data, Apache Maven, Automation, Java, Maintainability, Code Reusability, Extensible Markup Language (XML)
Beginner · Course · 1 - 3 Months

Skills you'll gain: Spring Framework, Spring Boot, Model View Controller, Hibernate (Java), Java, Java Programming, Web Development, Web Applications, Object-Relational Mapping, Application Deployment, Application Security, Database Application, Software Development Tools, Authentications, Development Environment, Data Access, Authorization (Computing)
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Build Tools, Authorization (Computing), Data Validation
★ 4.8 (15) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Bootstrap (Front-End Framework), Layout Design, UI Components, Front-End Web Development, Multimedia, Usability, Web Development, Interactive Design, Javascript, Graphic and Visual Design, Web Design and Development, Typography, Project Design, User Interface (UI), Web Analytics and SEO
★ 4.7 (13) · Beginner · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Web Applications, Full-Stack Web Development, Database Application, Data Store, Database Development, Database Management, SQL, Query Languages, Data Access, Real Time Data, Javascript, Data Entry, Software Engineering, Authentications
Beginner · Course · 1 - 4 Weeks