Improve Error Handling and User Notifications

[JavaBaz]

Currently, error messages (e.g., invalid directories, file move failures) are shown using JOptionPane. It would be better to enhance error handling to give more descriptive error messages and gracefully handle various scenarios (e.g., read/write permission issues, locked files, etc.).
Suggested Solution:

1. Improve the FileMover logic to catch and categorize specific exceptions (e.g., IOException, SecurityException).
2. Provide user-friendly messages that explain the issue and offer suggestions (e.g., "Check folder permissions").
3. Consider implementing a log file where more detailed technical errors are written for debugging purposes.