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: Smart Goals, Emotional Intelligence, Positivity, Personal Development, Empathy, Social Skills, Self-Awareness, Professional Development, Resilience, Conflict Management, Team Building, Stress Management, Team Motivation, Psychology, Leadership, Team Management, Team Leadership, Decision Making, Mindfulness
Beginner · Course · 1 - 3 Months

Skills you'll gain: TypeScript, React.js, UI Components, Javascript, Software Design Patterns
Advanced · Guided Project · Less Than 2 Hours

Skills you'll gain: Jenkins, Selenium (Software), GitHub, Git (Version Control System), Performance Testing, Continuous Integration, CI/CD, Apache Maven, Version Control, Java Programming, Test Automation, JUnit, Object Oriented Programming (OOP), Integration Testing, Browser Compatibility
Intermediate · Course · 3 - 6 Months

University of Maryland, College Park
Skills you'll gain: Construction Management, Sustainable Architecture, Construction Engineering, Sustainable Technologies, Facility Management, Stakeholder Management, Stormwater Management, Building Information Modeling, Architectural Engineering, Project Design, Environmental Engineering, Sustainability Standards, Environmental Resource Management, Project Management, Property Management, HVAC, Electrical Systems, Waste Minimization
Intermediate · Course · 1 - 3 Months

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 Integration, Cloud Security, Cloud Technologies, Artificial Intelligence and Machine Learning (AI/ML), SQL
Intermediate · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Data Ethics, Policy Analysis, Case Studies, Political Sciences, Data Analysis, Responsible AI, Public Policies, Analytics, Model Evaluation, Data Presentation, Data-Driven Decision-Making, Ethical Standards And Conduct, R Programming, Machine Learning
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), HTML and CSS, Front-End Web Development, Javascript, Responsive Web Design, Maintainability
Intermediate · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Apache Spark, Scala Programming, Big Data, Data Manipulation, Distributed Computing, Data Processing, Performance Tuning, SQL, Data Persistence, Data Analysis, Programming Principles
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Version Control, GitHub, Git (Version Control System), Data Transformation, Data Science, Data Analysis, R (Software), Data Processing, R Programming, Rmarkdown, Software Installation, Command-Line Interface
Mixed · Course · 1 - 4 Weeks

Ball State University
Skills you'll gain: Data Visualization, Rmarkdown, Exploratory Data Analysis, Data Visualization Software, Ggplot2, Interactive Data Visualization, Plot (Graphics), Statistical Visualization, R (Software), R Programming, Data Storytelling, Histogram, Scatter Plots, Data Analysis, Tidyverse (R Package), Data Manipulation
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Non-Verbal Communication, Assertiveness, Rapport Building, Executive Presence, Leadership, Interpersonal Communications, Business Leadership, Business Communication, Communication Strategies, Influencing, Trustworthiness
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Oracle Databases, Database Administration, Relational Databases, Database Management Systems, Database Architecture and Administration, Database Systems, Database Management, Multi-Tenant Cloud Environments, Software Installation, System Configuration, SQL, Virtual Environment, Virtual Machines
Intermediate · Course · 1 - 3 Months