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.

Packt
Skills you'll gain: Linux, Linux Administration, Linux Commands, File Management, Linux Servers, User Accounts, Operating System Administration, File Systems, OS Process Management, Unix Shell, Command-Line Interface, User Provisioning, General Networking, Shell Script, Operating Systems, Remote Access Systems, Scripting, Dataflow, System Monitoring
★ 4.6 (10) · Intermediate · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Software Design Patterns, Object Oriented Programming (OOP), Object Oriented Design, Programming Principles, Software Design, Algorithms, Software Architecture, Computer Programming, Python Programming, Model View Controller
★ 4.5 (40) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Financial Statements, Financial Modeling, Financial Analysis, Working Capital, Equities, Capital Expenditure, Financial Data, Business Valuation, Accounts Receivable, Finance, Analysis, Cash Flows, Corporate Finance, Risk Analysis, Investment Banking, Depreciation, Business, Estimation
★ 4.8 (12) · Mixed · Course · 1 - 4 Weeks

University of Minnesota
Skills you'll gain: Team Building, Clinical Leadership, Team Collaboration, Team Leadership, Leadership Development, Professional Development, Leadership, Health Informatics, Nursing Management, Initiative and Leadership, Informatics, Cultural Diversity
★ 4.3 (26) · Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Application Security, Secure Coding, Package and Software Management, Node.JS, Vulnerability Management, Javascript, Dependency Analysis, Vulnerability Assessments, Exploitation techniques
★ 4.5 (14) · Intermediate · 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

Scrimba
Skills you'll gain: Javascript, JavaScript Frameworks, Program Development, Web Development, Angular, Vue.JS, Application Development, React.js, Web Applications, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Data Structures, Software Engineering, Computer Science
★ 4.6 (25) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Java Programming, Solution Design, Query Languages, Software Architecture
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Risking, Generative Model Architectures, AI Security, OpenAI, AI Product Strategy, Investment Management, Data Ethics, Technology Strategies, Asset Management, Investments, Portfolio Management, Market Data, Business Ethics, Customer experience improvement, Operational Efficiency
★ 4.7 (15) · Beginner · Course · 1 - 4 Weeks

Universidad de los Andes
Skills you'll gain: NoSQL, Big Data, File Systems, Data Infrastructure, Apache Hadoop, Data Architecture, Distributed Computing, Scalability, Database Systems, Cloud Computing, Apache Spark, Public Cloud, Data Processing, Data Storage Technologies, Cloud Services, Data Storage, Data Management
Beginner · Course · 1 - 3 Months

LearnKartS
Skills you'll gain: Google Cloud Platform, Cloud Computing Architecture, Cloud Solutions, Cloud Engineering, Solution Architecture, Cloud Infrastructure, Cloud Security, Cloud Computing, Infrastructure Architecture, Cloud Services, Scalability, Performance Tuning, System Monitoring, Operational Excellence
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: Model Evaluation, Decision Tree Learning, Classification Algorithms, Model Training, Applied Machine Learning, Java, Java Programming, Model Optimization, Predictive Modeling, Machine Learning Software, Supervised Learning, Technical Communication, Fine-tuning, Tree Maps, MLOps (Machine Learning Operations), Machine Learning Algorithms, Algorithms
Advanced · Course · 1 - 4 Weeks