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.

Edureka
Skills you'll gain: Development Environment, Web Development, Computer Programming, Program Development, Software Development Tools
Beginner · Course · 1 - 3 Months

Skills you'll gain: Networking Hardware, OSI Models, Network Architecture, Network Protocols, Network Security, TCP/IP, Computer Networking, Local Area Networks, Virtual Private Networks (VPN), Wireless Networks, Network Routing, Wide Area Networks, Network Switches, Virtual Local Area Network (VLAN), Firewall
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Tableau Software, Dashboard, Data Visualization Software, Data Visualization, R Programming, Alteryx, Statistical Programming, Data Presentation, Interactive Data Visualization, Data Cleansing, Data Storytelling, Data Structures, Statistical Analysis, Workflow Management, Data Analysis, Scatter Plots, Graphing, Data Manipulation, Data Processing, Data Transformation
Intermediate · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Regulatory Requirements, Environmental Regulations, Regulation and Legal Compliance, Project Closure, Operations, Operational Analysis, Plant Operations and Management, Manufacturing Operations, Environment and Resource Management, Manufacturing and Production, Sustainable Development, Workforce Development, Environment Health And Safety, Prospecting and Qualification, Environment
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Statistical Modeling, Applied Machine Learning, Unsupervised Learning, Statistical Machine Learning, Regression Analysis, Classification And Regression Tree (CART), Statistical Methods, Data Science, Decision Tree Learning, Predictive Modeling, Statistical Analysis, Statistical Programming, Artificial Neural Networks, R Programming, Supervised Learning, Probability & Statistics, Advanced Analytics, Dimensionality Reduction, Random Forest Algorithm, Machine Learning
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Pearson
Skills you'll gain: PySpark, Apache Hadoop, Apache Spark, Big Data, Apache Hive, Data Lakes, Analytics, Data Pipelines, Data Processing, Data Import/Export, Data Integration, Linux Commands, Data Mapping, Linux, File Systems, Text Mining, Data Management, Distributed Computing, Java, C++ (Programming Language)
Intermediate · Specialization · 1 - 4 Weeks

Coursera
Skills you'll gain: TypeScript, Javascript, React.js, Debugging, Integrated Development Environments, Web Development Tools
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Statistical Inference, Probability Distribution, R Programming, Statistical Visualization, Statistics, Data Visualization, Statistical Analysis, Statistical Modeling, Statistical Hypothesis Testing, Data Analysis, Probability
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Geospatial Information and Technology, Geospatial Mapping, Spatial Data Analysis, Geographic Information Systems, GIS Software, Spatial Analysis, Environmental Monitoring, Unsupervised Learning, Data Analysis Software, Image Analysis, Global Positioning Systems, Machine Learning, R Programming, Image Quality, Data Processing, Open Source Technology, Data Collection, Data Transformation, Dimensionality Reduction, Data Import/Export
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Scripting, Python Programming, Computer Programming Tools, Devops Tools, Software Development Tools, Data Structures, Programming Principles, Program Development
Intermediate · Guided Project · Less Than 2 Hours

Infosec
Skills you'll gain: Authentications, Application Security, Open Web Application Security Project (OWASP), Secure Coding, Serverless Computing, Cryptography, Risk Management Framework, Threat Modeling, Cloud Security, Infrastructure Security, Package and Software Management, Node.JS, Web Applications, Javascript, Vulnerability Management, Cloud Services, Cloud Platforms, Web Development, Identity and Access Management, Vulnerability Assessments
Intermediate · Specialization · 1 - 3 Months
Duke University
Skills you'll gain: Storytelling, Needs Assessment, Initiative and Leadership, Leadership, Innovation, Compassion, Education and Training, Professionalism, Entrepreneurship, Adult Education, Formal Learning, Community and Social Work, Community Outreach, Personal Integrity, Leadership Development, Social Work, Social Justice, Teaching, Community Development, Public History
Beginner · Specialization · 3 - 6 Months