Monitor subfolders with a Java watch service

Question

I am using watchKey to listen for a file change in a particular folder.

Path _directotyToWatch = Paths.get(\"E:/Raja\");
WatchService watcherSvc         


        

Answer 1

I know this is ugly, hopefully somebody has a better answer but you can create a list of every file in every subfolder and there last modified times.

When you receive ENTRY_CREATE or ENTRY_DELETE compare the folder to your list to figure out which file was changed

When you receive a ENTRY_MODIFY compare the last modified times.

Remember to update your list.