"I'm a senior software engineer whose main languages are TypeScript and Python. I recently joined a new team that's very Java-heavy, and I spent a long time trying to find something that was the right skill level for me to learn Java. Everything I found seemed too basic and was explaining things like the concepts of variables, or assumed too much knowledge and was too difficult. I'm so pleased to have found Actlea; it was precisely what I needed to get up to speed. Andreas was great and found an excellent balance of explaining the language-specific features while assuming some prior knowledge. If you're already familiar with one or more languages and need to get up to speed quickly in Java, this is the course you're looking for. The cadence and pacing of the class is perfect, engaging, and thorough, and I have the tools I need now to delve deeper into this language and make an impact on my team. Thanks, Andreas, for putting this together!"
Java Foundations: Fast-track
Intensive Java onboarding for experienced developers. Master object-oriented concepts, Data-Oriented Programming (Java 21+), and functional data streams.
Full control over Java fundamentals, type-safe domain modeling with Records/Sealed Interfaces, massive scaling with Virtual Threads, and declarative data handling via Streams.
Developers from other backgrounds needing a fast but architecturally stable start in modern Java development in 2026.
Programming experience in another language is required, or previous knowledge of Java that needs a solid update to modern standards.
Curriculum & Highlights
Challenges we address
"How is robust object-oriented code built and how are references and errors handled correctly in Java?"
"How are Records, Sealed Interfaces, and Pattern Matching leveraged for type-safe business logic?"
"How is data processed declaratively using Streams, Collectors, and Virtual Threads?"
With Java's foundations and modern syntax in place, the next logical step is building cloud-ready web services in 'Spring Boot Jumpstart: Essentials'. →
Pricing is based on scope and number of participants. Both remote and onsite delivery is available.
Your Instructor
Andreas Olsson
Expertise through Active Learning
Java and the Spring Framework have been my core focus for over 20 years. Today, my mission is primarily to help organizations step into the future by integrating intelligent agents and AI-driven features into modern Java systems.
Actlea stands for Active Learning – the philosophy that programming is best learned by writing code, not by watching slides. My workshops focus on intensive, hands-on exercises designed to solve real-world problems.
I deliver proven training concepts globally across all timezones. While I specialize in remote delivery, I love to travel for onsite workshops. My modules are ready for immediate impact but can be tailored to your team's specific requirements.
Enterprise teams trained by Actlea
What past participants say
Read about the pedagogical approach, the hands-on labs, and the impact on daily work.
Related Training
Modern Java Fast-Track
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- Records & Text Blocks
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- Sealed Interfaces & Type Safety
TDD & JUnit: Quality in Java
Secure code quality by mastering TDD and JUnit 5 for modern Java applications.
- JUnit 5 Core & Assertions
- TDD: Red-Green-Refactor
- Structuring Test Classes
Spring Boot: Spring MVC & Thymeleaf
Rapid Web Development: Build fast SSR web apps with Spring MVC and Thymeleaf. Master forms and sessions through hands-on Active Learning.
- Spring MVC & SSR Architecture
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Ready to elevate your
Team's expertise?
Book a single workshop, a multi-day course, or a complete training package. The programs are built on proven standard modules of high technical quality, designed to be deployed immediately without lengthy preparation.
- ✔Expert-led training: Designed for professional development teams.
- ✔Standardized quality: Proven modules ready for immediate delivery.
- ✔Flexible formats: Execution is handled remote or onsite.
Send an inquiry to discuss availability and setup, completely without sales pressure.
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