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.

Scrimba
Skills you'll gain: React.js, UI Components, Front-End Web Development, Javascript
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Transaction Processing, Hybrid Cloud Computing, COBOL (Programming Language), Mainframe Technologies, Mainframe Computing, IBM Cloud, Cloud Applications, Enterprise Application Management, Application Development, Application Programming Interface (API), Cloud API
★ 4.5 (17) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Electronics, Systems Of Measurement, Digital Signal Processing, Data Processing, Analytics, Electronic Components, Statistical Methods, Open Source Technology, Mathematical Modeling
★ 4.9 (15) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, Generative AI, Generative Model Architectures, Generative Adversarial Networks (GANs), LLM Application, Fine-tuning, Large Language Modeling, Model Optimization, Artificial Intelligence and Machine Learning (AI/ML), Responsible AI, Embeddings, Data Preprocessing, AI Personalization, Deep Learning, Open Source Technology, Data Processing, Machine Learning, Data Cleansing, Data Visualization, Database Systems
★ 3.8 (8) · Beginner · Course · 1 - 3 Months

DeepLearning.AI
Skills you'll gain: Full-Stack Web Development, Retrieval-Augmented Generation, Web Applications, JavaScript Frameworks, React.js, LLM Application, Web Development, Javascript, Tool Calling, Agentic Workflows, Generative AI Agents, Data Persistence
★ 4.7 (16) · Beginner · Project · Less Than 2 Hours

Skills you'll gain: Data Structures, C++ (Programming Language), C and C++, Programming Principles, Algorithms, Theoretical Computer Science, Object Oriented Programming (OOP)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Adobe Firefly, AI powered creativity, Prompt Engineering, Adobe Express, Collaborative Software, Adobe Creative Cloud, Generative AI, Adobe Photoshop, Generative AI Agents, AI Personalization, AI Workflows, Content Creation, Data Import/Export, Responsible AI, Data Ethics, Creativity, Storytelling, Brand Strategy, Branding
★ 5 (14) · Beginner · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Web Development, Database Design, Relational Databases, Web Applications, Web Development Tools, Databases, Web Design and Development, Full-Stack Web Development, Database Systems, Database Development, Application Deployment, Server Side, HTML and CSS, Cloud Deployment, Back-End Web Development, Scripting Languages, Application Development, Cloud Applications, Javascript, Cloud Computing
★ 4.5 (52) · Intermediate · Course · 1 - 3 Months

University of Glasgow
Skills you'll gain: Strategic Leadership, Business Leadership, Leadership Studies, Strategic Thinking, Plan Execution, Business Strategy, Strategic Decision-Making, Organizational Strategy, Business Strategies, Leadership, Strategic Planning, Organizational Leadership, Leadership and Management, Business Management, Goal Setting
★ 4.8 (13) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Audit Working Papers, Financial Auditing, Document Management, Auditing, Audit Planning, Accounting Records, Compliance Auditing, Document Control, File Management, Verification And Validation
★ 3.7 (7) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Autoencoders, Shiny (R Package), Deep Learning, Recurrent Neural Networks (RNNs), Transfer Learning, Convolutional Neural Networks, Fine-tuning, Image Analysis, PyTorch (Machine Learning Library), Artificial Neural Networks, Applied Machine Learning, Tensorflow, Predictive Modeling, Model Optimization, Model Training, Interactive Data Visualization, Time Series Analysis and Forecasting, Model Evaluation
Advanced · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Data Governance, Databricks, Data Management, Metadata Management, Data Quality, Data Security
★ 2.8 (34) · Intermediate · Course · 1 - 4 Weeks