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.

Board Infinity
Skills you'll gain: Angular, HTML and CSS, JavaScript Frameworks, Javascript, Hypertext Markup Language (HTML), Front-End Web Development, Scalability, Web Applications, Cascading Style Sheets (CSS), Web Development, Software Design Patterns, Software Design, UI Components
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Authentications, OAuth, API Testing, Restful API, Application Programming Interface (API), JSON, Test Automation, Data Validation, Extensible Markup Language (XML), Mockups, Test Tools, Simple Object Access Protocol (SOAP), Virtualization, Debugging
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Javascript, Ajax, JSON, Web Applications, Web Development, Scripting, Hypertext Markup Language (HTML), Object Oriented Programming (OOP), Event-Driven Programming, Web Services, Programming Principles, Prototyping, Network Protocols
Mixed · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Responsive Web Design, HTML and CSS, Bootstrap (Front-End Framework), Web Design and Development, Web Applications, Browser Compatibility, User Experience Design, Requirements Analysis, Client Services, Javascript
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Azure DevOps Pipelines, Kubernetes, Azure DevOps, Node.JS, CI/CD, DevOps, Application Lifecycle Management, Microservices, Program Development, Containerization, Software Testing, Debugging, Cloud Development, Cloud Deployment, Application Deployment, Scripting, Version Control, Git (Version Control System)
Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Authentications, Cryptography, Application Security, Web Applications, Javascript, Identity and Access Management, Node.JS, Browser Compatibility
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Spring Boot, Cloud Deployment, Application Deployment, Google Cloud Platform, Cloud Applications, Key Management, Application Frameworks, Application Development, Data Access, Java
Intermediate · Project · Less Than 2 Hours

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

Skills you'll gain: Webpack, Frontend Performance, Search Engine Optimization, Web Development Tools, Web Analytics and SEO, Performance Tuning, Build Tools, Debugging, Web Development, Software Testing, Test Automation, Development Testing, WordPress, Javascript
Intermediate · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Apache Spark, Scala Programming, Big Data, Data Manipulation, Distributed Computing, Data Processing, Performance Tuning, SQL, Programming Principles, Data Storage Technologies
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Apache Hadoop, File Systems, Big Data, Data Infrastructure, Java, Data Structures, File Management, Systems Architecture, Data Processing, Distributed Computing, Data Storage, Development Environment, Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Docker (Software), Containerization, Kubernetes, Development Environment, Spring Boot, CI/CD, DevOps, Microservices, Debugging, MongoDB, Restful API
Beginner · Course · 1 - 3 Months