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.

University of Colorado Boulder
Skills you'll gain: Field-Programmable Gate Array (FPGA), Hardware Design, Laboratory Experience, Laboratory Reports, Application Specific Integrated Circuits, System Design and Implementation, Embedded Software, Embedded Systems, Electronic Hardware, Electronic Systems, Electrical and Computer Engineering, Eclipse (Software), Electronics Engineering, Test Case, Laboratory Testing, Test Script Development, Verification And Validation, Microarchitecture, Computer Architecture, Software Development
★ 4.5 (1.7K) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Object-Relational Mapping, Spring Framework, Hibernate (Java), Apache Maven, Model View Controller, Relational Databases, Database Design, MySQL, Java Programming, Databases, Web Applications, Java Platform Enterprise Edition (J2EE), Application Frameworks, Java, Full-Stack Web Development, Database Application, Authentications, Object Oriented Design, Back-End Web Development, Object Oriented Programming (OOP)
★ 4.7 (13) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Selenium (Software), JUnit, HTML and CSS, Test Automation, Hypertext Markup Language (HTML), Software Testing, Web Design and Development, Test Script Development, Test Tools, Web Development, Unit Testing, Software Quality Assurance, Java, Data Structures, Java Programming, Cascading Style Sheets (CSS), Test Execution Engine, Code Reusability, Debugging, Software Design Patterns
Intermediate · Course · 1 - 3 Months

Skills you'll gain: API Testing, Restful API, Application Programming Interface (API), Test Script Development, Authentications, JSON, Security Testing, Authorization (Computing), Java Programming, Scenario Testing, Java, Test Tools
★ 5 (11) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: API Testing, Restful API, Authentications, Test Automation, Test Script Development, Application Programming Interface (API), Software Testing, Authorization (Computing), Java Programming, Java, User Accounts
★ 5 (11) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Data Import/Export, Data Wrangling, Data Analysis, Exploratory Data Analysis, Java, Data Processing, Data Manipulation, Java Programming, Statistical Methods, Statistics
★ 4.5 (6) · Intermediate · Guided Project · Less Than 2 Hours

Vanderbilt University
Skills you'll gain: Android Development, Android (Operating System), Mobile Development, Software Design, User Interface (UI) Design, Java Programming, Data Access, Data Persistence, Service Management
★ 4.3 (411) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Classification Algorithms, Java Programming, Data Preprocessing, Machine Learning Software, Model Training, Model Deployment, Model Evaluation, Decision Tree Learning, Logistic Regression
Beginner · Course · 1 - 4 Weeks

IIT Guwahati
Skills you'll gain: Package and Software Management, Time Series Analysis and Forecasting, Cloud Computing Architecture, Linear Algebra, Data Structures, R (Software), Data Warehousing, Database Design, Model Evaluation, Database Management, Social Network Analysis, Algorithms, Java Programming, Deep Learning, Portfolio Management, Oral Comprehension, C (Programming Language), Econometrics, Spreadsheet Software, Data Literacy
Degree · 1 - 4 Years

Skills you'll gain: Javascript, Debugging, Frontend Integration, Event-Driven Programming, Dataflow, Web Applications, Development Environment, Cloud Computing
Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Model Context Protocol, Vector Databases, Agentic Workflows, Tool Calling, Agentic systems, AI Workflows, Google Gemini, Server Side, Gemini, Generative AI Agents, AI Integrations, Embeddings, Node.JS, Retrieval-Augmented Generation, Large Language Modeling, Web Development, PostgreSQL, Data Processing, Data Modeling, Javascript
Intermediate · Course · 1 - 3 Months

Skills you'll gain: React Redux, React.js, Front-End Web Development, Frontend Performance, JavaScript Frameworks, Web Development Tools, Event-Driven Programming, Web Applications, Javascript, TypeScript, UI Components, Application Development, Cascading Style Sheets (CSS), User Interface (UI), Context Management, E-Commerce, Package and Software Management
Intermediate · Course · 1 - 3 Months