Worked on the Apache NetBeans repository to enhance Java code formatting reliability by addressing a bug in the Java Reformatter. Focused on stabilizing the handling of erroneous 'then' statements within if-else blocks, the work corrected end-position calculations for the 'then' block and ensured proper formatting of subsequent else branches. This solution involved targeted Java refactoring and the addition of regression tests to prevent future formatting regressions. By improving code formatting and supporting smoother refactoring workflows, the changes reduced user-facing issues in the IDE. Demonstrated proficiency in Java, code formatting, and unit testing while contributing to a large open-source project.