"In all my years at school, I have never met a teacher who treated his students with as much patience and joy as Andreas did. His commitment to us felt very genuine, and it was clear that he was the right person in the right place. I am very glad we had him as a teacher during our 12 weeks at Brights."
Functional Java: Lambda & Streams
Replace loops with Lambdas and Streams for readable, crash-safe, and efficient data processing in modern Java.
Ability to write declarative code, build elegant data streams, and handle edge cases in a type-safe manner.
For developers wanting to write cleaner and more readable code using modern declarative patterns.
Java experience is required, for beginners 'Java Jumpstart: Essentials' is recommended first.
Curriculum & Highlights
Challenges we address
"How do you shift from imperative code to a declarative mindset using Lambdas?"
"How do we dynamically group and aggregate large datasets with Streams and Collectors?"
"When is a Parallel Stream actually faster, and how do you use Optional correctly?"
Secure the logic of your functional streams by moving on to 'TDD & JUnit: Quality in Java' to build a complete testing strategy. →
Standard price per group (up to 12 participants) for remote delivery. Additional costs apply for onsite delivery.
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.
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Ready to elevate your
Team's expertise?
Book a single workshop, combine modules into a package, or plan a full-scale bootcamp. My training is built on proven standard modules, ready to be delivered immediately to your team, regardless of your location.
- ✔Expert standard modules for senior teams
- ✔Global delivery across all time zones
- ✔Fixed group rate for up to 12 participants (remote)
- ✔Flexible delivery: Remote or On-site
Get in touch for a quote or to discuss availability.