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: Cucumber (Software), Selenium (Software), Apache Maven, Java, Object Oriented Programming (OOP), Issue Tracking, Gherkin (Scripting Language), Test Automation, Behavior-Driven Development, Test Execution Engine, Test Case, Debugging, Integration Testing, Data Structures
Intermediate · Course · 1 - 3 Months
Skills you'll gain: Node.JS, Restful API, React Redux, Database Design, React.js, Ajax, Database Development, Database Application, Server Side, Full-Stack Web Development, Back-End Web Development, NoSQL, Javascript, JavaScript Frameworks, Front-End Web Development, API Design, Cloud Applications, Data Structures, MongoDB, Debugging
Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Field-Programmable Gate Array (FPGA), Hardware Design, Verification And Validation, Electronic Systems, Embedded Systems, Electronics Engineering, Eclipse (Software), Application Specific Integrated Circuits, Electronic Hardware, System Design and Implementation, Electronics, Program Development, Technical Design, Integrated Development Environments, Computer Architecture, Computational Logic, Hardware Architecture, Software Development, Embedded Software, Debugging
Build toward a degree
Intermediate · Specialization · 3 - 6 Months
University of London
Skills you'll gain: Computer Science, Debugging, Development Environment, Computer Systems, Web Applications, Arithmetic, Computer Literacy, Javascript, Network Security, Computer Networking, Program Development, Computer Graphics, Web Design and Development, Cybersecurity, Computer Programming, Problem Management, Computational Thinking, General Mathematics, Systems Of Measurement, Problem Solving
Build toward a degree
Beginner · Specialization · 1 - 3 Months

Meta
Skills you'll gain: Jest (JavaScript Testing Framework), React.js, JavaScript Frameworks, API Design, Unit Testing, UI Components, TypeScript, Front-End Web Development, Javascript, Integration Testing
Intermediate · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Threat Modeling, Open Web Application Security Project (OWASP), Secure Coding, Cryptography, Exploit development, Authentications, Encryption, Penetration Testing, Vulnerability Assessments, Data Security, Application Security, Security Controls, Vulnerability Management, Security Testing, Software Design, C and C++, Verification And Validation, Java, Programming Principles, Cybersecurity
Intermediate · Specialization · 3 - 6 Months

University of London
Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Human Computer Interaction, Interaction Design, Bootstrap (Front-End Framework), Usability, User Interface and User Experience (UI/UX) Design, Wireframing, Cascading Style Sheets (CSS), Data Structures, JavaScript Frameworks, Javascript
Mixed · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Hibernate (Java), Object-Relational Mapping, Java Platform Enterprise Edition (J2EE), Data Access, Java, Relational Databases, Data Mapping, JUnit, Databases, Query Languages, Transaction Processing
Intermediate · Course · 1 - 4 Weeks

The Linux Foundation
Skills you'll gain: Bash (Scripting Language), File Systems, Package and Software Management, Linux, Command-Line Interface, Unix Commands, Linux Commands, Shell Script, Scripting, Software Development Tools, File Management, Scripting Languages, Program Development, System Programming, Java, Debugging
Beginner · Course · 1 - 4 Weeks

University of Alberta
Skills you'll gain: Service Oriented Architecture, API Design, Web Services, Simple Object Access Protocol (SOAP), Microservices, Restful API, Software Architecture, Application Programming Interface (API), Web Applications, JSON, Android Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: PostgreSQL, Java, Java Platform Enterprise Edition (J2EE), Application Servers, Database Design, Databases, Application Design, Back-End Web Development, Web Applications, Javascript, Secure Coding, Data Validation, Payment Systems, Document Management, Authentications, Verification And Validation, File Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Spring Framework, JUnit, Restful API, Spring Boot, Unit Testing, Java, Hibernate (Java), Model View Controller, Web Services, Apache Maven, Databases, Web Applications, Gradle, Object Oriented Programming (OOP), Eclipse (Software), Dependency Analysis
Beginner · Course · 3 - 6 Months