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.

Board Infinity
Skills you'll gain: Ansible, IT Automation, YAML, Automation, Infrastructure as Code (IaC), Configuration Management, Cloud-Based Integration, DevOps, Operational Efficiency, Scalability, User Provisioning, Cloud Development
Beginner · Course · 1 - 4 Weeks
Coursera
Skills you'll gain: Deepseek, Model Deployment, AI Enablement, LLM Application, Generative Model Architectures, Competitive Analysis, AI Product Strategy, AI Workflows, Application Deployment, Organizational Strategy, Data Ethics, Model Evaluation, Automation, Integration Testing, Cost Reduction, Process Optimization, Program Evaluation
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: API Gateway, Cloud API, Cloud Deployment, Restful API, Google Cloud Platform, Cloud Applications, JavaScript Frameworks, Proxy Servers, Operational Databases, Javascript, Performance Tuning
Beginner · Project · Less Than 2 Hours
Skills you'll gain: Data Integration, Extract, Transform, Load, Metadata Management, Amazon Redshift, Amazon Web Services, Data Pipelines, Data Processing, Data Warehousing, Cloud Development, Amazon S3, Automation, Data Management, Data Transformation, Serverless Computing, AWS Identity and Access Management (IAM), Process Optimization, System Monitoring
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: File I/O, Software Design Patterns, Software Documentation, Testability, Development Testing, Package and Software Management
Advanced · Course · 3 - 6 Months

Northeastern University
Skills you'll gain: Database Design, Database Theory, Database Management, Relational Databases, Databases, Database Architecture and Administration, Database Management Systems, SQL, NoSQL, Data Modeling, Unified Modeling Language, Query Languages, Data Integrity, Data Manipulation, Performance Tuning
Build toward a degree
Mixed · Course · 1 - 3 Months

Edureka
Skills you'll gain: TypeScript, Object Oriented Design, Object Oriented Programming (OOP), Programming Principles, Software Design, Computer Programming, Software Architecture, Debugging, Maintainability, Software Development, Javascript, Web Development Tools, Web Development
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Interaction Design, Computer Graphics
Beginner · Specialization · 1 - 3 Months

Microsoft
Skills you'll gain: Data Manipulation, Data Transformation, Tidyverse (R Package), Data Wrangling, R Programming, Exploratory Data Analysis, Data Analysis, Data Cleansing
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Virtualization and Virtual Machines, Network Administration, File Systems
Intermediate · Course · 1 - 3 Months
Skills you'll gain: SonarQube, Code Review, Vulnerability, CI/CD, Secure Coding, GitLab, Jenkins, Application Security, Vulnerability Assessments, Software Quality Assurance, Maintainability, Kubernetes, GitHub, Software Installation, Security Management, Data Integration, Performance Tuning, Quality Improvement, Technical Management, Analysis
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Mapping, IBM WebSphere MQ, Middleware, Business Process Automation, Process Driven Development, Data Integration, Scenario Testing, File Transfer Protocol (FTP), Test Case, Development Testing, Data Validation, Java Programming, System Configuration, Debugging, File Management
Mixed · Course · 1 - 4 Weeks