James Hamilton extended the Guardsquare/proguard-core repository to support Java 24, focusing on compiler internals and version management using Java. He delivered a targeted compatibility update by increasing the maximum supported class file version, introducing new constants, and updating version checks to accommodate the latest Java release. The work involved a single, well-scoped commit that minimized risk while ensuring downstream users could prepare for Java 24 environments. Although the update was limited in scope, it demonstrated careful attention to compatibility and maintainability. James’s contribution addressed a specific need for forward compatibility, reflecting a precise and methodical engineering approach within the project.