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.

Peking University
Skills you'll gain: C# (Programming Language), Object Oriented Programming (OOP), .NET Framework, Computer Programming, Extensible Markup Language (XML), Microsoft Visual Studio, Database Management, User Interface (UI), Network Model, File I/O, Program Development, Data Structures, Graphics Software, Image Analysis
Intermediate · Course · 3 - 6 Months

University of California, Davis
Skills you'll gain: Ajax, Javascript and jQuery, Data Validation, JSON, Javascript, Event-Driven Programming, Web Development Tools, Object Oriented Programming (OOP), Debugging
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Exploratory Data Analysis, Ggplot2, Data Visualization Software, Tidyverse (R Package), Data Visualization, Version Control, Data Analysis, Statistical Methods, Data Wrangling, R Programming, GitHub, Data Transformation, Statistical Analysis, Git (Version Control System), Data Manipulation, Statistical Programming
Beginner · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Operating Systems, OS Process Management, System Programming, File Systems, Unix Commands, Command-Line Interface, System Monitoring, System Design and Implementation, Performance Tuning, Package and Software Management, File Management, Algorithms, Cloud Platforms, Security Controls, User Accounts, Debugging
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Social Network Analysis, Network Analysis, Data Visualization, Graph Theory, Relational Databases, Data Visualization Software, Data Storytelling, Data Analysis, Social Sciences, Statistical Analysis, Machine Learning, R Programming, Analytical Skills, Sociology, Natural Language Processing, Data Manipulation, Text Mining, Analytics, Social Impact, Statistical Modeling
Intermediate · Specialization · 3 - 6 Months

University of Colorado System
Skills you'll gain: Natural Language Processing, Text Mining, Clinical Informatics, Clinical Documentation, Clinical Data Management, R Programming, Google Cloud Platform, Unstructured Data, Data Processing
Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: JUnit, Unit Testing, Software Testing, Mockups, Test Case, Test Driven Development (TDD), Java
Intermediate · Course · 1 - 4 Weeks

University of Maryland, College Park
Skills you'll gain: Project Management Institute (PMI) Methodology, Project Management Life Cycle
Beginner · Course · 1 - 3 Months

Fundação Instituto de Administração
Skills you'll gain: Big Data, Data Mining, Data-Driven Decision-Making, FinTech, Ggplot2, Data Visualization Software, Plot (Graphics), Deep Learning, Data Modeling, R Programming, Market Data, Predictive Analytics, Analytics, Data Science, Data Analysis, Business Analytics, Data Processing, Data Manipulation, Machine Learning, Financial Market
Beginner · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Regulatory Requirements, Environmental Regulations, Regulation and Legal Compliance, Project Closure, Operations, Operational Analysis, Sustainable Engineering, Plant Operations and Management, Manufacturing Operations, Environment and Resource Management, Manufacturing and Production, Sustainable Development, Material Handling, Environment Health And Safety, Prospecting and Qualification, Environment
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Sampling (Statistics), Statistical Methods, Descriptive Statistics, Statistical Visualization, Data Import/Export, Pareto Chart, Histogram, Statistical Analysis, R (Software), Box Plots, R Programming, Data Synthesis, Probability Distribution, Probability & Statistics, Exploratory Data Analysis, Statistics, Statistical Hypothesis Testing, Data Science
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Cost Management, Cost Estimation, Project Management, Scope Management, Project Controls, Project Closure, Project Implementation, Requirements Management, Project Schedules, Work Breakdown Structure
Beginner · Course · 1 - 4 Weeks