GSoC 2026 - Java 25 Language Feature Support

[Vivek Singh solanki]

Monday, 22 June report

What I did in the fourth week:

This week I focused on fixing the remaining false positives for the compact source file support feature.

Worked on the following issues:

• https://github.com/checkstyle/checkstyle/issues/9806 - Fix false positive on JEP 512 compact source files
• https://github.com/checkstyle/checkstyle/issues/20217 - Fix false positive on JEP 512 compact source files
• https://github.com/checkstyle/checkstyle/issues/20268 - Fix false positive on JEP 512 compact source files
• https://github.com/checkstyle/checkstyle/issues/20269 - Fix false positive on JEP 512 compact source files

Also reviewed the following PRs:

• https://github.com/checkstyle/checkstyle/pull/20250
• https://github.com/checkstyle/checkstyle/pull/20362

With these fixes, there are no more false positives in any check for the compact source file feature.