Worked on stability and reliability improvements for Java-based desktop applications, focusing on bug fixes in the swt-initiative31/prototype-skija and eclipse-platform/eclipse.platform repositories. Addressed a critical crash in DirectoryDialog by introducing robust exception handling, ensuring that a SWTException is thrown when NSOpenPanel is null to prevent application failures. Enhanced the Eclipse platform’s launch flow by refining OperationCanceledException handling, guaranteeing consistent behavior when launches are canceled and improving test coverage for cancellation scenarios. Utilized Core Java, Eclipse Development, and unit testing to deliver targeted solutions, demonstrating a methodical approach to maintaining code quality and preventing regressions in complex application environments.