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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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package org.jgroups.auth.sasl;

import java.io.File;
import java.util.TimerTask;

/**
 * FileWatchTask. Polls a file for modifications and invokes a provided {@link FileObserver}
 *
 * @author Tristan Tarrant
 * @since 8.0
 */
public class FileWatchTask extends TimerTask {
   private final File file;
   private long modified;
   private final FileObserver observer;

   public FileWatchTask(File file, FileObserver observer) {
      if (!file.exists()) {
         throw new IllegalArgumentException("File '" + file + "' does not exist");
      }
      this.file = file;
      this.modified = file.lastModified();
      this.observer = observer;
   }

   @Override
   public void run() {
      long modifiedLocal = file.lastModified();
      if (this.modified != modifiedLocal) {
         this.modified = modifiedLocal;
         observer.fileChanged(file);
      }
   }

}