A community site showcasing legacy Java patterns alongside modern equivalents to help developers understand how everyday Java code has evolved.

Foojay.io's platform is a central hub for Java developers, offering insights into Java programming language, JVM ecosystem, and Java-related technologies. Through articles, tutorials, and community forums, Foojay.io offers insights into building scalable and maintainable Java applications. Developers can learn about Java language features, performance tuning tips, and best practices in Java development to write efficient and reliable software.

Foojay.io

java.evolved is a community site that documents how common Java coding patterns have changed across language versions using side-by-side before/after examples. It targets developers working in mixed-era codebases (Java 6, 8, 17+) by showing how existing code would look if written with modern idioms. Examples include replacing verbose data classes with records, using pattern matching in instanceof checks, and leveraging switch expressions. The project is positioned as a practical reference for onboarding and code reviews in mature Java systems.

A Visual Diff of Java’s Evolution: Inside java.evolved

very informative website. thanks for sharing

Many people talk about Java like is still Java 8

Thanks for sharing. It’s verry usefull