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 Maryland, College Park
Skills you'll gain: Statistical Analysis, Data Analysis Software, STATA (Software), Data Integration, Data Ethics, Stata, R Programming, Sampling (Statistics), Statistical Modeling, Descriptive Statistics, Regression Analysis, Logistic Regression, Informed Consent
Mixed · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Javascript and jQuery, jQuery, Scripting, Scripting Languages, Javascript, UI Components, Web Development Tools, Game Design, Object Oriented Programming (OOP), Event-Driven Programming, Animations
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Descriptive Statistics, Data Analysis, Exploratory Data Analysis, Quantitative Research, R Programming, Statistical Analysis, Probability & Statistics, Statistics, Data Science
Beginner · Guided Project · Less Than 2 Hours
Skills you'll gain: Web Content Accessibility Guidelines, User Interface (UI), Usability, Web Design, Hypertext Markup Language (HTML), Front-End Web Development, UI Components, Semantic Web, Cascading Style Sheets (CSS), Javascript
Intermediate · Guided Project · Less Than 2 Hours

Universidad Nacional Autónoma de México
Skills you'll gain: Energy and Utilities, Radiation Protection, Waste Minimization, Process Engineering, Materials science, Chemical Engineering, Manufacturing Processes, Engineering Design Process, Mechanical Engineering, Engineering Calculations, Control Systems, Environmental Engineering, Cost Estimation, Chemistry, Environment and Resource Management, Natural Resource Management, Safety Standards, Mathematical Modeling, Simulation and Simulation Software
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Problem Solving, Vocabulary, Logical Reasoning, Critical Thinking, Deductive Reasoning, Arithmetic, Data Literacy, Analytical Skills, Complex Problem Solving, Grammar, English Language, Data Analysis, Learning Strategies, Trend Analysis, Applied Mathematics, Data Presentation, Verbal Communication Skills, Analysis, Quantitative Research, Estimation
Beginner · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Bioinformatics, Molecular Biology, Data Visualization Software, Statistical Analysis, Command-Line Interface, Linux
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Javascript, Ajax, JSON, Web Applications, Web Development, Scripting, Object Oriented Programming (OOP), Event-Driven Programming, Web Services, Prototyping, Network Protocols
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Large Language Modeling, Natural Language Processing, LLM Application, Generative AI Agents, Prompt Engineering, Test Case, Agentic systems, User Interface (UI), Artificial Intelligence and Machine Learning (AI/ML), Performance Testing, Debugging, Applied Machine Learning, Artificial Intelligence, Machine Learning Algorithms, Classification Algorithms, Decision Support Systems, Model Evaluation, Performance Tuning
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Image Analysis, Computer Vision, Deep Learning, Convolutional Neural Networks, Computer Graphics, Machine Learning Methods, Artificial Intelligence, Data Ethics, Microsoft Excel, Generative AI, Linear Algebra, Feature Engineering, Digital Signal Processing
Build toward a degree
Beginner · 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

Skills you'll gain: COBOL (Programming Language), Agile Methodology, Technical Support, Software Development Life Cycle, Agile Project Management, Scrum (Software Development), Technical Support and Services, Software Development, Software Quality Assurance, Quality Assurance, Code Review, Debugging, Software Documentation, Computer Programming
Beginner · Course · 1 - 3 Months