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.

Simplilearn
Skills you'll gain: Object Oriented Programming (OOP), C++ (Programming Language), Computer Programming, Programming Principles, Algorithms, Data Structures, Data Manipulation
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Sampling (Statistics), Statistical Hypothesis Testing, Data-Driven Decision-Making, Descriptive Statistics, Correlation Analysis, Data Analysis, Probability Distribution, Statistical Software, Statistics, Statistical Analysis, Estimation, R (Software), Data Visualization, Risk Analysis, Probability, Statistical Methods, R Programming, Return On Investment, Probability & Statistics, Problem Solving
Build toward a degree
Beginner · Specialization · 3 - 6 Months

University of Geneva
Skills you'll gain: Water Resources, Diplomacy, Water Resource Management, International Relations, Mediation, Conflict Management, Negotiation, Governance, Environmental Laws, Data Collection
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Computer Programming, Programming Principles, Data Import/Export, Data Structures, Integrated Development Environments, Python Programming, Computer Science
Beginner · Course · 1 - 4 Weeks

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

Edureka
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Git (Version Control System), GitHub, Bitbucket, Version Control, Software Versioning, GitLab, Software Configuration Management, Collaborative Software, Integrated Development Environments, Software Development, Code Review, IntelliJ IDEA, Microsoft Visual Studio, Eclipse (Software), Linux, Command-Line Interface
Beginner · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Statistical Modeling, R Programming, Data Analysis, Data Ethics, Statistical Methods, Regression Analysis, Predictive Modeling, Mathematical Modeling, Machine Learning, Logistic Regression, Statistical Inference, Model Evaluation, Probability Distribution, Linear Algebra, Calculus
Build toward a degree
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Supervised Learning, Computer Vision, Recurrent Neural Networks (RNNs), Machine Learning Methods, Convolutional Neural Networks, Matplotlib, Data Visualization, Probability & Statistics, Deep Learning, Classification Algorithms, Artificial Intelligence, Plotly, Statistical Analysis, Data Visualization Software, Statistical Hypothesis Testing, Machine Learning, Seaborn, Applied Machine Learning, Digital Signal Processing, Statistical Inference
Intermediate · Specialization · 3 - 6 Months

Edureka
Skills you'll gain: Rust (Programming Language), Back-End Web Development, System Programming, Web Frameworks, Web Development, Web Servers, Software Documentation, Scalability, Maintainability, Secure Coding, Debugging, Application Development, Authentications, Authorization (Computing)
Intermediate · Specialization · 1 - 3 Months

Imperial College London
Skills you'll gain: Mathematical Modeling, Epidemiology, Infectious Diseases, Model Evaluation, Simulations, Statistical Modeling, Predictive Modeling, Data Modeling, R Programming, Statistical Methods, Public Health, Probability Distribution
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Spring Framework, Java, Dependency Analysis, Maintainability, Object Oriented Programming (OOP), Extensible Markup Language (XML), Software Design, Software Architecture, Testability
Intermediate · Course · 1 - 4 Weeks