Java Data Structures courses can help you learn about arrays, linked lists, stacks, queues, and hash tables. You can build skills in algorithm efficiency, data manipulation, and implementing search and sort techniques. Many courses introduce tools like Eclipse or IntelliJ IDEA, which support coding practices and debugging, allowing you to apply your knowledge in real coding environments. You'll also explore concepts such as recursion and tree structures, enhancing your ability to tackle complex programming challenges.

Coursera
Skills you'll gain: Project Schedules, Project Management Software, Workflow Management, Dashboard, Real Time Data, Timelines, Kanban Principles, Database Software, Project Management, Scheduling, Data Sharing, Leadership, Problem Solving
Beginner · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Penetration Testing, MITRE ATT&CK Framework, Open Web Application Security Project (OWASP), Cyber Security Assessment, Metasploit, Public Key Infrastructure, Exploit development, Exploitation techniques, Threat Modeling, Cybersecurity, Distributed Denial-Of-Service (DDoS) Attacks, Cryptography, Cyber Threat Intelligence, Mobile Security, Security Testing, Brute-force attacks, Vulnerability Scanning, Network Security, Operating Systems, Encryption
Intermediate · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Object Oriented Design, JUnit, Object Oriented Programming (OOP), Software Design Patterns, Java, Unified Modeling Language, Software Design, Java Programming, Software Architecture, Model View Controller, Conceptual Design
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Amazon Web Services, AWS Identity and Access Management (IAM), Solution Architecture, Cloud Computing Architecture, Infrastructure Architecture, Amazon CloudWatch, Identity and Access Management, Organizational Structure, Cloud Solutions, Continuous Monitoring, Account Management
Intermediate · Guided Project · Less Than 2 Hours

Harvard Business Review
Skills you'll gain: Business Modeling, Business Acumen, Business Strategy, Data-Driven Decision-Making, Decision Making, Competitive Analysis, Financial Statements, Leadership, Financial Analysis, Team Leadership, Critical Thinking
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Network Analysis, R Programming, Statistical Analysis, Regression Analysis, Statistical Modeling, Bayesian Network, Statistical Hypothesis Testing, Statistical Programming, Data Analysis, R (Software), Probability, Probability Distribution, Applied Machine Learning, Probability & Statistics, Statistical Methods, Social Network Analysis, Applied Mathematics, Simulations, Data Science, Markov Model
Intermediate · Specialization · 3 - 6 Months

Edureka
Skills you'll gain: Angular, Application Deployment, JavaScript Frameworks, Software Testing, Test Tools, Web Development Tools, Unit Testing, Application Performance Management, CI/CD, Continuous Integration, Web Applications, TypeScript, Ajax, Application Lifecycle Management, Secure Coding, Web Development, Code Coverage, Software Architecture, Command-Line Interface, Version Control
Intermediate · Specialization · 1 - 3 Months

Google Cloud
Skills you'll gain: MLOps (Machine Learning Operations), Model Deployment, Google Cloud Platform, Applied Machine Learning, Data Pipelines, Tensorflow, Machine Learning
Intermediate · Project · Less Than 2 Hours
University of Illinois Urbana-Champaign
Skills you'll gain: Responsible AI, Automation, Artificial Intelligence, Cloud Infrastructure, Infrastructure As A Service (IaaS)
Build toward a degree
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Reinforcement Learning, Responsible AI, Agentic systems, Artificial Intelligence, Machine Learning Methods, Distributed Computing, Simulations, Transfer Learning
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Political Sciences, Policy Analysis, Social Justice, Social Sciences, Public Policies, Game Theory, Demography, Logical Reasoning, Applied Mathematics
Mixed · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Python Programming, Programming Principles, Data Structures, Computer Programming, Computational Thinking, Web Development Tools, Web Development, Software Engineering
Intermediate · Course · 1 - 4 Weeks