You can watch a folder/directory on your server or computer easily using Watch API provided by Java.
Below is the algorithm:
STEP1: Create a watch service
WatchService watchService = FileSystems.getDefault().newWatchService();
STEP2: Get the path of the folder you want to monitor
STEP3: Register the folder path with the service
STEP4: Poll for events in an infinite loop
STEP5: For each event get the file name from the event context
STEP6: For each event check its type
STEP7: For each type of event perform the action you want.
STEP8: Reset the watch key used to poll events.
Explained in detail with code here:
https://fullstackdeveloper.guru/2020/12/23/how-to-watch-a-folder-directory-or-changes-using-java/
Top comments (2)
I think there's an
inotifylibrary for Java. That would take care of this for you and mean you didn't have to go through the expensive "poll for events in an infinite loop" step.thanks Ben..will check that.