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: Data Import/Export, Data Analysis, Exploratory Data Analysis, Java, Data Processing, Data Manipulation, Java Programming, Statistics
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Restful API, Application Programming Interface (API), Software Testing, JSON, Java, Data Validation, Test Automation, Test Case, Development Environment
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java, Java Programming, Maintainability, Software Design, Data Storage Technologies, Program Development, Application Development, Data Structures, File Management
Intermediate · Course · 1 - 4 Weeks

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

Vanderbilt University
Skills you'll gain: Generative AI Agents, Java, Agentic systems, OpenAI, Generative AI, Prompt Engineering, Large Language Modeling, Document Management, Secure Coding, Business Logic, Software Design Patterns, Coordination
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cucumber (Software), Gherkin (Scripting Language), Behavior-Driven Development, Apache Maven, Restful API, Test Automation, JSON, Scalability, Application Programming Interface (API), Test Case, Test Data, Authentications, Java, Software Testing, Data Mapping
Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Decision Tree Learning, Fraud detection, Regression Analysis, Debugging
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Web Services, Restful API, Apache Maven, Spring Boot, Spring Framework, Gradle, Simple Object Access Protocol (SOAP), Java Platform Enterprise Edition (J2EE), Application Programming Interface (API), Java, Postman API Platform, Software Development Tools, API Design, Application Frameworks, Secure Coding, Object-Relational Mapping, JSON, JUnit, Extensible Markup Language (XML)
Intermediate · Course · 3 - 6 Months

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: Gherkin (Scripting Language), Debugging, Integration Testing, Software Design Patterns, Test Data, Scripting, Web Development Tools, Data Structures, Automation, SQL, Cascading Style Sheets (CSS), MySQL, Hypertext Markup Language (HTML)
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Data Structures, Graph Theory, Algorithms, Java, Object-Relational Mapping, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Universidad Nacional Autónoma de México
Skills you'll gain: Android Development, Android Studio, Android (Operating System), Java, Mobile Development, Object Oriented Programming (OOP), JSON, Mockups, Java Programming, Web Services, Restful API, Application Design, Application Development, Mobile Development Tools, Software Design Patterns, Application Programming Interface (API), Prototyping, User Interface (UI) Design, Application Lifecycle Management, Instagram
Intermediate · Specialization · 3 - 6 Months