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.

Alibaba Cloud Academy
Skills you'll gain: Data Visualization Software, Big Data, Apache Hadoop, Apache Spark, Apache Hive, Distributed Computing, Data Processing, Data Warehousing, Data Analysis, Data Integration, Cloud Security, Artificial Intelligence and Machine Learning (AI/ML), SQL
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Open Source Technology, Package and Software Management, Web Development, Linux, Shell Script, Database Design, Ubuntu, Relational Databases, Web Applications, Web Development Tools, Unix Shell, Test Driven Development (TDD), Python Programming, Linux Administration, Databases, Object Oriented Programming (OOP), Scripting Languages, Computer Programming, Javascript, Database Management
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Scaled Agile Framework, Agile Methodology, Backlogs, Kanban Principles, Sprint Retrospectives, Sprint Planning, Project Management Institute (PMI) Methodology, Prioritization, Lean Methodologies, Project Management Life Cycle, Waterfall Methodology, Continuous Integration
Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Visual Basic (Programming Language), Development Environment, Program Development, Microsoft Development Tools, .NET Framework, Data Storage, Computer Programming, Software Development, Computational Logic, Cross Platform Development, Command-Line Interface, Debugging
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Javascript, Event-Driven Programming, Web Design and Development, Interactive Design, Web Applications, Interaction Design, Scripting, UI Components, Web Development, Scripting Languages, Data Validation
Beginner · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Software Documentation, Leaflet (Software), Technical Documentation, Data Manipulation, Data Cleansing, Data Transformation, Data Visualization Software, Code Review, R Programming, GitHub, Continuous Integration, Software Testing
Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Big Data, Analytics, Data Processing, Data Analysis, Data Strategy, Data Lakes, Data Storage, Data Warehousing, Data Management, Data Infrastructure, Data Architecture, Data Capture, Unstructured Data, Real Time Data
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Oracle Databases, Database Administration, Relational Databases, Database Management Systems, Database Architecture and Administration, Data Import/Export, Patch Management, Database Management, Operational Databases, Multi-Tenant Cloud Environments, Database Software, Data Migration, Data Storage Technologies, Software Installation, Performance Tuning, User Accounts, System Configuration, SQL, Disaster Recovery, Development Environment
Intermediate · Specialization · 3 - 6 Months

University of Maryland, College Park
Skills you'll gain: Agile Project Management, Scrum (Software Development), Sprint Planning, Scaled Agile Framework, Sprint Retrospectives, Agile Software Development, Agile Methodology, Team Management, Project Management Institute (PMI) Methodology, Team Performance Management, Agile Product Development, Backlogs, Kanban Principles, Project Management, Planning, User Story, Lean Methodologies, Continuous Delivery, Risk Management Framework, Product Management
Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Sampling (Statistics), R (Software), Statistical Inference, Probability Distribution, R Programming, Statistical Hypothesis Testing, Descriptive Statistics, Statistical Methods, Data Science, Statistics, Data Analysis, Statistical Analysis, Probability, Data Manipulation, Histogram
Build toward a degree
Beginner · Course · 1 - 3 Months

Skills you'll gain: Descriptive Statistics, R Programming, Statistical Reporting, Data Quality, Data Cleansing, Statistics, Data Manipulation, Data Analysis Software, Statistical Analysis, Data Import/Export
Beginner · Guided Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Data Storage Technologies, Network Monitoring, File Management
Intermediate · Course · 1 - 4 Weeks