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: Customer Retention, Loyalty Programs, Customer Relationship Management (CRM) Software, Customer Data Management, Customer Engagement, Customer Relationship Management, Customer Relationship Building, Customer Analysis, Target Audience, HubSpot CRM, Customer experience strategy (CX), Marketing Automation, Customer Insights, Market Analysis, Email Automation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Bash (Scripting Language), Test Automation, Unit Testing, Scripting, Software Testing, Linux Commands, Test Driven Development (TDD), Unix Commands, Development Environment, Operating Systems, Command-Line Interface, File Management, OS Process Management, File Systems, Automation, Python Programming
Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Biostatistics, Statistical Hypothesis Testing, Logistic Regression, Regression Analysis, Sampling (Statistics), Statistical Methods, Statistical Visualization, Statistical Analysis, Epidemiology, Quantitative Research, Descriptive Statistics, Probability & Statistics, Statistical Inference, Probability Distribution, Public Health, Scientific Methods, Statistics, Statistical Modeling, Advanced Analytics, Predictive Modeling
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Feature Engineering, Decision Tree Learning, Applied Machine Learning, Model Evaluation, Random Forest Algorithm, Responsible AI, Data Import/Export, Machine Learning, Classification Algorithms
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Prompt Engineering, Generative AI Agents, Generative AI, Ideation, Customer Insights, Social Media Marketing, AI Personalization, Copywriting, Brainstorming, Social Media Content, Content Marketing, Content Creation, Target Audience, Digital Marketing
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Control Systems, Machine Controls, Engineering, Scientific, and Technical Instruments, Process Control, Embedded Systems, Embedded Software, Real Time Data, Laboratory Experience, Electronic Systems, Electronics, Power Electronics, Electronic Hardware, Manufacturing Processes, Three-Phase, Automation Engineering, Electrical Equipment, Thermal Management, Hardware Design, Electrical Engineering, Electronics Engineering
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Simplilearn
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Operational Risk, Application Security, Security Requirements Analysis, DevSecOps, Security Testing, Threat Modeling, Cyber Attacks, Web Development, Web Applications, Security Management, Vulnerability Assessments, Security Software, Security Engineering, Security Controls, Scenario Testing, Authorization (Computing), Software Development, Data Manipulation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: PyTorch (Machine Learning Library), Model Evaluation, Convolutional Neural Networks, Transfer Learning, Image Analysis, Deep Learning, Python Programming
Intermediate · Guided Project · Less Than 2 Hours
University of Michigan
Skills you'll gain: Mathematical Modeling, Systems Thinking, Strategic Decision-Making, Innovation, Social Sciences, Strategic Thinking, Decision Making, Complex Problem Solving, Critical Thinking, Network Analysis, Economics, Probability, Market Dynamics
Intermediate · Course · 1 - 3 Months

Coursera
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Agentic Workflows, Technical Communication, Agentic systems, AI Orchestration, Artificial Intelligence and Machine Learning (AI/ML), AI Security, Data Presentation, Professional Development, MLOps (Machine Learning Operations), Technical Documentation, Coaching, Technical Writing, Portfolio Management, Verbal Communication Skills, Project Documentation, Communication Strategies, GitHub
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Excel Formulas, Spreadsheet Software, Microsoft Excel, Microsoft Office, Microsoft 365, Data Analysis, Business Mathematics
Beginner · Guided Project · Less Than 2 Hours