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: JSON, Application Programming Interface (API), Restful API, Javascript, Web Applications, Hypertext Markup Language (HTML), Servers, Cascading Style Sheets (CSS)
★ 4.8 (15) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Model Context Protocol, AI Integrations, AI Security, Enterprise Architecture, Scalability, Systems Architecture, Servers, Interoperability, Authentications, System Design and Implementation, Enterprise Security, Performance Tuning
★ 2.5 (17) · Advanced · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: React Redux, React.js, Cascading Style Sheets (CSS), UI Components, JavaScript Frameworks, Front-End Web Development, User Interface (UI), Web Frameworks, Maintainability, Authentications, Web Development Tools, Application Frameworks, Javascript, Interactive Design, Application Programming Interface (API), Web Design, Frontend Performance, Authorization (Computing), Web Development, Web Applications
★ 4.8 (36) · Intermediate · Specialization · 1 - 3 Months
University of Toronto
Skills you'll gain: Network Analysis, Laboratory Reports, Bioinformatics, Research Reports, Molecular, Cellular, and Microbiology, Biology, Analysis, Correlation Analysis, Biotechnology, Data Synthesis, Statistical Methods, Experimentation
★ 4.8 (32) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Income Tax, Tax Planning, Tax Management, Tax Preparation, Tax Compliance, Tax, Tax Returns, Tax Laws, Sales Tax, Compensation Strategy, Property Accounting, Case Studies, Gift Accounting, Business
★ 5 (63) · Beginner · Specialization · 3 - 6 Months

Microsoft
Skills you'll gain: Logistic Regression, Web Scraping, Data Visualization, Rmarkdown, Data Presentation, Data Storytelling, Version Control, Leaflet (Software), Statistical Modeling, Statistics, Statistical Hypothesis Testing, Statistical Reporting, Data Cleansing, Statistical Analysis, Probability & Statistics, Data Manipulation, R Programming, Data Preprocessing, R (Software), Data Wrangling
★ 4.2 (9) · Beginner · Professional Certificate · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Social Network Analysis, Network Analysis, Social Media Analytics, Data Visualization, Graph Theory, Relational Databases, Data Presentation, Data Visualization Software, R (Software), Infographics, Data Analysis, Network Model, Database Theory, Query Languages, Social Sciences, Statistical Analysis, Machine Learning, Machine Learning Methods, R Programming, Data Manipulation
★ 4.4 (22) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Rmarkdown, Autoencoders, Shiny (R Package), Deep Learning, Recurrent Neural Networks (RNNs), Transfer Learning, Model Evaluation, R (Software), Artificial Intelligence and Machine Learning (AI/ML), Data Import/Export, Classification Algorithms, Reinforcement Learning, R Programming, Model Training, Ggplot2, Plot (Graphics), Data Manipulation, Convolutional Neural Networks, Applied Machine Learning, Machine Learning Algorithms
★ 4.8 (8) · Beginner · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: ABAP RESTful Programming Model (RAP), SAP S/4HANA, Restful API, Core Data (Software), Security Controls, HTML and CSS, UI Components, User Interface (UI) Design
★ 4.4 (8) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Business Transformation, Digital Transformation, Network Performance Management, Network Infrastructure, Virtual Networking, Network Architecture, Operational Efficiency, Cloud Infrastructure, Telecommunications, Cloud-Native Computing, Wireless Networks, Hybrid Cloud Computing, Technology Solutions, Cloud Deployment, Emerging Technologies, Virtualization, Distributed Computing, Hardware Architecture, Scalability, Application Deployment
★ 4.7 (9) · Beginner · Course · 1 - 4 Weeks

Jordan University of Science and Technology
Skills you'll gain: Object Oriented Programming (OOP), Object Oriented Design, C# (Programming Language), Program Development, Software Engineering, C++ (Programming Language), Data Structures, Software Development, Computer Programming, Programming Principles, Java, Query Languages
★ 3.8 (19) · Intermediate · Course · 1 - 4 Weeks

Codio
Skills you'll gain: Algorithms, C++ (Programming Language), C and C++, Data Structures, Theoretical Computer Science, Computer Programming
★ 3.9 (16) · Intermediate · Course · 1 - 4 Weeks