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POWatch for changes to files Java
 

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    <p>I'm trying to develop a watch service that, every time a piece of code is modifed, created or deleted, does a certain action.</p> <p>I've made a Daemon that implements WatchService and that gets the path to a certain package to watch, for example "../JDV/src/randompackage/java/test/money_scenario".</p> <p>This Daemon has the following code:</p> <pre><code>public Daemon(Path dir) throws IOException{ this.dir = dir; watcher = FileSystems.getDefault().newWatchService(); WatchKey key = dir.register(watcher, ENTRY_CREATE,ENTRY_DELETE, ENTRY_MODIFY); } public void processEvents() throws InitializationError { for (;;) { // wait for key to be signaled WatchKey key; try { key = watcher.take(); } catch (InterruptedException x) { return; } for (WatchEvent&lt;?&gt; event: key.pollEvents()) { WatchEvent.Kind kind = event.kind(); if (kind == OVERFLOW) { continue; } if(kind == ENTRY_CREATE) { System.out.println("Creation has been detected in " + getDirName()); } if(kind == ENTRY_DELETE) { System.out.println("Deletion has been detected in " + getDirName()); } if(kind == ENTRY_MODIFY) { System.out.println("Modification has been detected in " + getDirName()); } } boolean valid = key.reset(); if (!valid) { break; } } } </code></pre> <p>What happens is the following: I run the Daemon and it is active. Whenever I go Create or Delete a class in in the money_scenario package (which itselves has subpackages from where I could delete/create the class), the Daemon detects it and prints "Modification has been detected", instead of creation/deletion. When I modify a class in the money_scenario package, it doesn't detect anything.</p> <p>What am I doing wrong?</p> <p>Edit: Resolved but another issue popped up. Multiple events: When I delete a class for example I get:</p> <p>Modification has been detected in money_scenario Deletion has been detected in money_scenario Modification has been detected in money_scenario</p>
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