An empty string ("") also watches all files.Īll files ending in "recipe" with a "doc" extension.Īll files beginning with "win" with an "xml" extension. The Filter property can be changed after the FileSystemWatcher object has started receiving events.įor more information about filtering out unwanted notifications, see the NotifyFilter, IncludeSubdirectories, and InternalBufferSize properties.įilter accepts wildcards for matching files, as shown in the following examples. Use of multiple filters such as "*.txt|*.doc" is not supported. Factory method that creates a most efficient file system watcher depending on a current operating system and file system type of the specified folder. Adds file events listener to this watcher. For example, to watch for changes in any text files, set the Filter property to "*.txt". Verifies if the specified event should be filtered out or not using the associated FileEventFilter. You can do this using Path class like below: 1. WatchService watchService FileSystems.getDefault ().newWatchService () STEP2: Get the path of the folder you want to monitor. Create a watch service using the below java code: 1. You can also watch for changes in a certain type of file. Here are the steps in detail: STEP1: Create a watch service. For example, to watch for changes in the file MyDoc.txt, set the Filter property to "MyDoc.txt". To watch a specific file, set the Filter property to the file name. To watch changes in all files, set the Filter property to an empty string (""). Return Value: It returns a fs.StatWatcher object when the function is successfully called.īelow examples illustrate the fs.watch() method in Node.js:Įxample 1: This example shows the usage of the watch() method on a file.Gets or sets the filter string used to determine what files are monitored in a directory. ![]()
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