java

Java Foundations: Fast-track

Intensive Java onboarding for experienced developers. Master Java 21/25, Maven, and functional programming through Active Learning.

Expected Outcome

Full control over Java syntax, Sealed Classes, Records, the Maven lifecycle, and declarative data handling with Streams.

Target Audience

Developers from other backgrounds needing a fast but architecturally stable start in modern Java development in 2026.

Prerequisites

Several years of professional programming experience is required to absorb the course's high pace.

Curriculum & Highlights

Modern Java 21 & 25 Syntax
Functional Java: Streams & Lambdas
Maven & Build Lifecycle
Records & Sealed Classes
Collections & Data Structures
Virtual Threads & Project Loom Intro
Error Handling & Exception Strategies

Challenges we address

"How do I leverage modern syntax like Sealed Classes and Records to write safer domain models?"

"How do the Java Streams API and Lambdas work for efficient and declarative data processing?"

"How do I structure professional projects with Maven and manage external dependencies correctly?"

Detailed Description
Mastering Java as an experienced developer is about quickly identifying the platform's modern strengths and idiomatic patterns. This course focuses on establishing a professional standard where the language is leveraged to its full potential for building robust and maintainable systems in complex environments. Through Active Learning, we progress from fundamental types to the advanced language constructs that define modern Java development in 2026. We explore how the ecosystem connects, from source code to JVM execution, and how tools like Maven secure the entire build process. This training provides developers with the necessary confidence to immediately navigate and contribute to large-scale projects using a modern and unified coding standard. By implementing Sealed Classes and Records, we create domain models with high type safety and clear states, minimizing logical errors in the business layer. We address the challenge of boilerplate code through declarative programming with Lambdas and the Streams API, transforming complex data handling into readable and efficient logic. To secure application architecture, we master the Maven lifecycle and dependency management, ensuring the project adheres to established Enterprise standards. Actlea's core philosophy is that syntax is merely the tool; understanding the underlying patterns is what defines a senior developer. Experience demonstrates that a deep dive into Java's modern foundations is the single most important factor in maintaining development velocity over time. This training serves as the critical bridge that transforms existing expertise into immediate delivery capabilities on the Java platform.
Recommendation & Next Steps

With Java's foundations and modern syntax in place, the next logical step is building scalable services in 'Spring Boot Jumpstart: Essentials'.

Format Expert Course
Duration 3 days
Level Professional
Instructor Andreas Olsson
Price per group On Request

Pricing is based on scope and number of participants. Both remote and onsite delivery is available.

Tech Stack
Java 21 Java 25 Maven Functional Java Architecture
Andreas Olsson

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.

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Enterprise teams trained by Actlea

Academic Work
Handelsbanken
Scania
Swedbank
CGI
SEB
Participant Reviews

What past participants say

Read about the pedagogical approach, the hands-on labs, and the impact on daily work.

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Take the next step

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.