21.5. Java NIO.2 Enhancements (Java 7+)

Try these first

1. 1.

   What does the WatchService API do?

   Hint

   Consider changes within directories.

2. 2.

   What is a symbolic link?

   Hint

   Think of it as a shortcut.

3. 3.

   What functionality does the WatchService API provide?

   • Monitor file system events
   • Manage database connections
   • Create GUI elements

   Hint

   Think about how applications can respond to filesystem changes.

4. 4.

   AccessDeniedException is thrown when you try to access what?

   • Non-existent files
   • Restricted files/directories
   • Files without read permissions

   Hint

   Focus on permissions and access rights.

5. 5.

   Design a small Java application that utilizes the WatchService API to monitor a folder and log changes in a file.

   Hint

   Focus on correctly registering the directory and handling WatchKey events.

6. 6.

   Create a scenario where AccessDeniedException might be triggered and explain how you would handle it in code.

   Hint

   Consider user permissions and how exceptions can lead to better user feedback.