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jfilewatcher is simple file watcher service written in Java. It uses the default polling method to check for new / modified / deleted files. It then sends events corresponding events. You can specify folder and multiple file patterns. It also provides a global lock facility to prevent multiple file watchers running at same time.


Here's how you use it from command line ...

java -cp lib/log4j.jar:dist/jfilewatcher-2.0.jar:. ejaz.jfilewatcher.core.JFileWatcherServices /home


Here's how you use it programmatically ...

JFileWatcherService fservice = new JFileWatcherService();

// If you want to watch specific files, 
// pass second arg as an array of Strings of regexp patterns
fservice.watch(new File(args[0]), null); 

// Start file watcher service (it is a thread!)
fservice.start();