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: Search Engine Marketing, Google Ads, Pay Per Click Advertising, Online Advertising, Search Engine Optimization, Digital Marketing Campaigns, Marketing, Digital Marketing, Digital Advertising, Paid media, Campaign Management, Marketing Automation, Advertising Campaigns, Google Analytics, Advertising, Media Buying, Target Audience, Bidding
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cloud Engineering, Data Integration, Performance Tuning, Serverless Computing, Database Architecture and Administration, Data Quality, Data Transformation
Beginner · Course · 1 - 3 Months

Skills you'll gain: Data Analysis Expressions (DAX), Power BI, Dashboard Creation, Dashboard, Data Modeling, Business Intelligence, Data Access, Microsoft Copilot, Data Integration, Interactive Data Visualization, Data-Driven Decision-Making, Performance Reporting, Data Transformation, Data Cleansing, ChatGPT, Model Optimization
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AWS Kinesis, Data Engineering, Amazon Redshift, Amazon Web Services, Apache Kafka, Cloud Computing Architecture, Data Lakes, Real Time Data, Amazon Elastic Compute Cloud, Data Management, Cloud Engineering, Cloud Management, Interactive Data Visualization, Amazon S3, Data Integration, Data Architecture, Data Migration, Performance Tuning, Serverless Computing, AWS Identity and Access Management (IAM)
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Financial Statement Analysis, Working Capital, Financial Statements, International Finance, Capital Budgeting, Financial Analysis, Corporate Finance, Environmental Social And Corporate Governance (ESG), Financial Modeling, Ethical Standards And Conduct, Portfolio Management, Business Ethics, Portfolio Risk, Economics, Decision Making, Regression Analysis, Financial Policy, Business Economics, Quantitative Research, Investment Management
Beginner · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Version Control, GitLab, Continuous Integration, Software Versioning, CI/CD, Git (Version Control System), Collaborative Software, Javascript
★ 4.2 (20) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Debugging, Application Development, Scripting Languages, Shell Script, Model View Controller, Python Programming, Software Development Methodologies, Data Validation, Record Keeping, Programming Principles, Code Reusability, Problem Solving
★ 4.9 (49) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Model Evaluation, Supervised Learning, Machine Learning Methods, AI Personalization, Classification Algorithms, Machine Learning, Model Training, Logistic Regression, Model Optimization, Data Analysis, Driving engagement, Persona (User Experience)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: GIS Software, Model Evaluation, Geographic Information Systems, Extract, Transform, Load, Spatial Analysis, Data Visualization, Spatial Data Analysis, Geospatial Mapping, Data Pipelines, Geospatial Information and Technology, Apache Airflow, Geostatistics, Interactive Data Visualization, Scientific Visualization, Data Visualization Software, Cloud Computing, Leaflet (Software), Environmental Monitoring, Pandas (Python Package), Python Programming
★ 2.1 (8) · Beginner · Specialization · 3 - 6 Months

Edureka
Skills you'll gain: Rust (Programming Language), Memory Management, Application Programming Interface (API), Server Side, Code Reusability, Back-End Web Development, System Programming, Web Frameworks, Web Development, Other Programming Languages, Web Servers, Software Documentation, Scalability, Integrated Development Environments, Build Tools, Data Analysis, Maintainability, Network Protocols, Application Development
★ 3.7 (28) · Intermediate · Specialization · 1 - 3 Months

Scrimba
Skills you'll gain: Node.JS, JSON, Server Side, Web Development Tools, Back-End Web Development, JavaScript Frameworks, Web Servers, Application Programming Interface (API), Restful API, Javascript, Web Development, Package and Software Management, Servers, Network Protocols
★ 4.5 (6) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Timelines, Google Gemini, Calendar Management, Project Schedules, Scheduling, Google Sheets, Spreadsheet Software, Content Scheduling, Social Media Management, Social Media Marketing, Brainstorming
Beginner · Guided Project · Less Than 2 Hours