What are some common challenges faced by Java Swing developers when working on legacy applications?

Java Swing developers often encounter challenges when maintaining or upgrading legacy applications, such as dealing with outdated codebases, limited documentation, and compatibility issues with newer Java versions. Additionally, integrating modern UI features or third-party libraries can be difficult due to the static nature of older Swing architectures. Effective communication with team members and stakeholders is crucial to prioritize updates and ensure a smooth transition to more maintainable solutions.