During July 2025, Minwoo Jung focused on enhancing code quality within the pinpoint-apm/pinpoint repository by refactoring the BatchQueryParameter component. He replaced usages of Collections.EMPTY_LIST with Collections.emptyList() in Java constructors, improving type safety and ensuring consistent, immutable list handling throughout the codebase. This targeted code refactoring addressed technical debt and clarified generics usage, reducing future maintenance complexity and potential confusion for developers. Although no major bugs were fixed during this period, Minwoo’s work in Java development emphasized maintainability and code hygiene, laying a stronger foundation for future features and contributing to a more robust and readable code structure.