Since JavaOne 2025, Java has moved from JDK 25, the latest LTS release, toward JDK 26, with major updates across the language, APIs, runtime, tooling, security, startup performance, and garbage collection. This talk reviews the most important change…

Inside Java is a resource for Java developers, offering insights, tutorials, and updates on the Java programming language, platform, and ecosystem. With contributions from Java experts and members of the Java community, Inside Java covers a wide range of topics, including language features, performance optimizations, and upcoming releases. Developers can stay informed about the latest developments in the Java ecosystem, learn about new APIs and frameworks, and explore best practices for building robust and scalable Java applications.

Inside Java

A comprehensive overview of Java changes from JDK 21 through JDK 26, covering language improvements (unnamed patterns, flexible constructors, module imports, primitive patterns, lazy constants), new and finalized APIs (foreign-function and memory API, stream gatherers, class-file API, PEM encoding, HTTP/3), runtime enhancements (faster startup, improved garbage collection), tooling updates (simpler main, multi-source-file programs, Markdown in JavaDoc), security additions (quantum-resistant encryption), and updated structured concurrency. The talk also highlights JDK 26 preview features and new command-line options for deep reflection.

Java 26: Better Language, Better APIs, Better Runtime – Inside.java