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 Colorado Boulder
Skills you'll gain: Data Mining, Anomaly Detection, Unsupervised Learning, Data Warehousing, Supervised Learning, Data Pipelines, Data Preprocessing, Classification Algorithms, Data Modeling, Decision Tree Learning, Data Management, Machine Learning Algorithms, Data Cleansing, Model Evaluation, Exploratory Data Analysis, Statistical Analysis, Machine Learning, Big Data, Analytical Skills, Data Analysis
Build toward a degree
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Programming Principles, C++ (Programming Language), C and C++, Computer Programming, Integrated Development Environments, Pseudocode, Computer Science
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Predictive Analytics, Logistic Regression, Exploratory Data Analysis, Data Visualization, Data Modeling, Business Analytics, Data Analysis, Statistical Modeling, Regression Analysis, Data Preprocessing, Supervised Learning, Decision Tree Learning, Data Cleansing, Artificial Neural Networks
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Hardware Troubleshooting, Computer Hardware, Computer Architecture, Desktop Support, Data Storage Technologies, System Configuration, USB, Peripheral Devices, System Support
Beginner · Course · 1 - 3 Months

University of London
Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Human Computer Interaction, Interaction Design, Web Design and Development, Bootstrap (Front-End Framework), Usability, User Interface and User Experience (UI/UX) Design, Wireframing, Cascading Style Sheets (CSS), Data Structures, Web Components, Javascript
Mixed · Course · 1 - 3 Months

ISAE-SUPAERO
Skills you'll gain: Mechanics, Mechanical Engineering, Simulations, Engineering Calculations, Physics, Applied Mathematics, Engineering Analysis, Algebra
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Biostatistics, Bioinformatics, Exploratory Data Analysis, Statistical Analysis, Statistical Methods, Statistical Hypothesis Testing, Statistics, R Programming, Probability & Statistics, Data Preprocessing, Data Analysis, Statistical Inference, Regression Analysis, Data Pipelines, Data Transformation, Logistic Regression
Mixed · Course · 1 - 4 Weeks

University of Washington
Skills you'll gain: Public Speaking, Storytelling, Verbal Communication Skills, Motivational Skills, Performing Arts, Constructive Feedback, Writing, Leadership
Beginner · Course · 1 - 3 Months

Skills you'll gain: IntelliJ IDEA, Object Oriented Design, Debugging, Software Design, User Interface (UI), Apache Maven, Design Thinking, Object Oriented Programming (OOP), Program Development, Build Tools, Integrated Development Environments, Software Development Tools, Eclipse (Software), Data Validation, Version Control, JUnit, Software Development, Git (Version Control System), Data Import/Export, Java
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Ggplot2, Data Visualization Software, Data Visualization, Statistical Visualization, Rmarkdown, Shiny (R Package), Dashboard, Leaflet (Software), Interactive Data Visualization, R Programming, Scatter Plots, Box Plots, Spatial Data Analysis, Histogram, Data Science, Data Analysis, User Interface (UI), UI Components
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Bioinformatics, Data Analysis Software, Big Data, R Programming, Statistical Programming, Data Manipulation, Data Structures, Software Installation, Data Import/Export
Mixed · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Magnetic Resonance Imaging, Medical Imaging, Image Analysis, Data Manipulation, Neurology, R Programming, Data Processing, Scientific Visualization, Data Preprocessing, Data Transformation, Data Import/Export
Intermediate · Course · 1 - 4 Weeks