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.

University of Illinois Urbana-Champaign
Skills you'll gain: Distributed Computing, Cloud Infrastructure, Cloud Services, Big Data, Apache Spark, Cloud Computing, Cloud Storage, Cloud Platforms, Network Architecture, Data Storage Technologies, Computer Networking, File Systems, Apache Hadoop, Network Infrastructure, Cloud Applications, Infrastructure As A Service (IaaS), Middleware, Containerization, Software-Defined Networking, NoSQL
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Penetration Testing, Network Security, Threat Modeling, Mobile Security, Cloud Security, Vulnerability Assessments, Public Key Infrastructure, Cryptography, Security Controls, Threat Detection, Cybersecurity, Authorization (Computing), Security Awareness, Cloud Computing, Encryption, Malware Protection, Intrusion Detection and Prevention, Identity and Access Management, Cyber Attacks, Data Integrity
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Data Architecture, Data Infrastructure, Data Modeling, Scalability, Data Management, Data Strategy, Microservices, Software Architecture, Information Architecture, CI/CD, Maintainability, Enterprise Architecture, Organizational Structure, Product Automation, Interoperability, Data Analysis, Generative AI
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Data Science, Web Development, Python Programming, Programming Principles, Artificial Intelligence, Computer Programming, Application Development, Scientific Visualization, Scripting
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: OSI Models, Computer Networking, Network Routers, General Networking, TCP/IP, Networking Hardware, Network Troubleshooting, Network Switches, Local Area Networks, Network Infrastructure, Network Protocols, Network Performance Management, Network Model, Network Analysis
Beginner · Course · 1 - 3 Months

University of California, Santa Cruz
Skills you'll gain: Bayesian Statistics, Statistical Inference, Statistics, Data Analysis, Probability, Statistical Modeling, Statistical Analysis, Microsoft Excel, Probability Distribution, R Programming, Regression Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Threat Modeling, Application Deployment, Scripting, Cryptography, Cryptographic Protocols, Application Security, Scalability, Software Development, Payment Systems, FinTech, Secure Coding, Software Development Tools, Distributed Computing, Computer Programming, Transaction Processing, Emerging Technologies, Business Analysis, Market Dynamics, Finance
Intermediate · Specialization · 1 - 3 Months

EIT Digital
Skills you'll gain: Real-Time Operating Systems, Embedded Software, Embedded Systems, Internet Of Things, Cryptography, Operating Systems, Network Architecture, Network Security, Cybersecurity, Web Services, Encryption, Network Protocols, Public Key Cryptography Standards (PKCS), Wireless Networks, Threat Modeling, System Programming, Computer Programming, Software Engineering, C (Programming Language), Real Time Data
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, jQuery, Bootstrap (Front-End Framework), Hypertext Markup Language (HTML), User Experience Design, User Accounts, MongoDB, User Experience, Wireframing, Web Applications, Full-Stack Web Development, Interactive Data Visualization, JavaScript Frameworks, Web Development Tools, User Interface (UI), Javascript
Beginner · Specialization · 3 - 6 Months

Simplilearn
Skills you'll gain: Backlogs, Scrum (Software Development), Sprint Retrospectives, Sprint Planning, Agile Methodology, Agile Project Management, User Story, Product Management, Meeting Facilitation, Team Leadership
Beginner · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Data Structures, Programming Principles, Python Programming, Computer Programming, Computational Thinking, Scripting, Software Development Tools, Integrated Development Environments, Data Import/Export, Jupyter, File Management
Beginner · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: Responsible AI, Incident Response, Data Ethics, Generative AI, LLM Application, Application Security, Large Language Modeling, Security Engineering, Threat Modeling, Cybersecurity, Security Controls, IT Security Architecture, Information Systems Security, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Machine Learning, Security Management, MLOps (Machine Learning Operations), Agentic systems, Ethical Standards And Conduct
Beginner · Specialization · 3 - 6 Months