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.

Infosec
Skills you'll gain: Authentications, Secure Coding, Cryptography, Application Security, Web Applications, Javascript, Identity and Access Management, Node.JS, Security Awareness
★ 4.5 (70) · Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Secure Coding, Application Security, Exploitation techniques, Web Applications, Javascript, Web Development, Node.JS, Java Programming
★ 4.6 (37) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Network Troubleshooting, Help Desk Support, System Configuration, Computer Hardware, Networking Hardware, Hardware Troubleshooting, Technical Support and Services, Technical Support, Peripheral Devices, System Support, Desktop Support, General Networking
★ 3.4 (140) · Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Embedded Software, Embedded Systems, Performance Tuning, Hardware Design, Systems Architecture, Systems Design, Hardware Architecture, Software Architecture, System Software, System Design and Implementation, Reliability, System Programming, Real Time Data, Performance Testing, Failure Analysis, System Requirements, Memory Management, Data Integrity, Linux
★ 4.4 (20) · Intermediate · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: AI Personalization, Personalized Service, Operations Support Systems, Customer Analysis, Telecommunications, Customer Retention, Network Performance Management, Responsible AI, Wireless Networks, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Network Architecture, Computer Networking, Emerging Technologies, Digital Communications, Generative AI Agents, Generative AI, Network Protocols, System Design and Implementation, Communication
★ 4.5 (21) · Advanced · Specialization · 1 - 3 Months

Skills you'll gain: AutoCAD, Technical Drawing, Engineering Drawings, Computer-Aided Design, Architectural Drawing, Drafting and Engineering Design, Autodesk, User Interface (UI)
★ 4.7 (24) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Data Structures, Python Programming, Data Manipulation, Programming Principles, Quantum computing, Computer Programming, Software Installation, Computational Logic, Development Environment, Package and Software Management, Jupyter, System Configuration
★ 4.4 (19) · Beginner · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: Angular, TypeScript, JavaScript Frameworks, UI Components, Bootstrap (Front-End Framework), Application Frameworks, Code Reusability, Web Development Tools, Web Applications, Front-End Web Development, Software Architecture, Application Development, Command-Line Interface, Development Environment, Cascading Style Sheets (CSS)
★ 4.2 (14) · Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Descriptive Statistics, Statistical Hypothesis Testing, Regression Analysis, Statistical Programming, R (Software), Probability Distribution, Statistical Analysis, R Programming, Data Import/Export, Probability & Statistics, Statistical Modeling, Statistical Methods, Descriptive Analytics, Plot (Graphics), Statistics, Data Manipulation, Data Analysis, Statistical Inference, Predictive Modeling, Data Wrangling
★ 4.9 (7) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Model Evaluation, Unsupervised Learning, Deep Learning, Machine Learning Methods, Autoencoders, Anomaly Detection, Applied Machine Learning, Machine Learning Algorithms, Model Training, Machine Learning, Machine Learning Software, Supervised Learning, Decision Tree Learning, Predictive Modeling, Data Validation, Classification Algorithms, Random Forest Algorithm, Data Import/Export, Model Optimization, Data Manipulation
★ 4.5 (74) · Intermediate · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Histogram, Data Visualization, Data Literacy, Data Collection, Descriptive Statistics, Statistics, Data Analysis, Statistical Visualization, Plot (Graphics), Statistical Reporting, Sampling (Statistics), Research, Data Validation
★ 4.7 (29) · Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Application Security, Angular, OAuth, Test Driven Development (TDD), Cryptography, Web Components, Data Validation, Unit Testing, Vue.JS, Development Testing, Data Security, Authentications, Encryption, Authorization (Computing), HTML and CSS, Hypertext Markup Language (HTML), Web Applications, Javascript, Security Strategy, Computer Programming
★ 4.3 (102) · Beginner · Specialization · 1 - 3 Months