Part I — The Modern Java Platform

This part orients the reader to the current Java platform landscape (as of Dec 2025). It introduces release cadence, LTS considerations, and modern toolchain practices for building, packaging, and distributing Java applications.

What You'll Learn

This part covers the foundational elements of modern Java: understanding the rapid release cadence, adopting LTS versions strategically, and leveraging powerful modern toolchain features that simplify packaging and distribution.

Chapters in This Part

Chapter 1. Getting Started with Java 25

Begin your modern Java journey with a comprehensive introduction to the JDK 25 ecosystem. This chapter prepares developers of all backgrounds to work effectively with the latest platform features, from setting up your development environment to understanding the key architectural improvements that make Java 25 a powerful choice for contemporary applications.

Chapter 2. Toolchain and Packaging

Master the modern Java build and deployment landscape. Discover how JPMS enables true modularity, how jlink creates custom runtime images for optimal distribution, and how jpackage generates platform-native installers. Learn dependency management with Maven and Gradle, and adopt best practices that reduce complexity and improve maintainability.