Core Java courses can help you learn object-oriented programming, exception handling, multithreading, and Java Collections. 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: WordPress, Development Environment, Content Management Systems, Content Management, Data Management, PHP (Scripting Language), Database Development, Information Architecture, Javascript and jQuery, Data Security, Data Validation
Intermediate · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Java, Web Servers, Encryption, Software Installation
Intermediate · Course · 1 - 4 Weeks

University of Maryland, College Park
Skills you'll gain: Team Building, Project Controls, Project Scoping, Agile Project Management, Project Management, Risk Management, Sprint Planning, Team Leadership, Project Implementation, Requirements Management, Stakeholder Management, Stakeholder Communications, Lean Methodologies, Design Thinking
Beginner · Course · 1 - 3 Months

JetBrains
Skills you'll gain: Kotlin, Object Oriented Programming (OOP), Java, Java Programming, Spring Framework, Android Development, IntelliJ IDEA, Functional Design, Interoperability, Unit Testing
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Front-End Web Development, Application Programming Interface (API), Event-Driven Programming, Development Environment
Beginner · Course · 1 - 3 Months

Rice University
Skills you'll gain: Dataflow, Java, Programming Principles, Application Frameworks, Algorithms, Performance Tuning, Computer Science
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Full-Stack Web Development, Order Management, Responsive Web Design, UI Components, Web Applications, JavaScript Frameworks, React.js, Authentications, Data Validation, E-Commerce, Dashboard, TypeScript, Database Development, User Accounts, Application Programming Interface (API), Product Management, Payment Processing and Collection
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Structures, Development Environment, C++ (Programming Language), Debugging, Computational Thinking, Integrated Development Environments, Computer Programming
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Unit Testing, JUnit, Test Case, Test Driven Development (TDD), Code Coverage, Software Testing, Software Development, Software Engineering, Java Programming, Java
Beginner · Guided Project · Less Than 2 Hours

SkillUp
Skills you'll gain: Hibernate (Java), Object-Relational Mapping, Spring Boot, Restful API, Java, NoSQL, Database Development, SQL, Databases, Database Design, Java Programming, Data Access, Database Management, Relational Databases, Back-End Web Development, Query Languages, Software Development
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Java Platform Enterprise Edition (J2EE), Scripting, Application Servers, Javascript and jQuery, Java, Apache Tomcat, Server Side, Hypertext Markup Language (HTML), Web Applications, Model View Controller
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: ASP.NET, .NET Framework, Responsive Web Design, HTML and CSS, C# (Programming Language), Full-Stack Web Development, Web Applications, Web Development, Javascript and jQuery, UI Components, Bootstrap (Front-End Framework), Development Environment, Cascading Style Sheets (CSS), Restful API, React.js, Microsoft Visual Studio, Application Programming Interface (API), Model View Controller
Intermediate · Course · 1 - 3 Months