Use thread to check for file exists. How?

Question

public class FileSearcher extends Thread
     String name = "Unknown";
     //RunFileSearcher rfs = new RunFileSearcher(name);
     //FileSearcher rfs = new FileSearcher(name);
     File f = new File();
     Thread t = new Thread(); // create  the thread
     t.start(); // start the thread running
     public void run(name)
          if( f.exists(name) )
               System.out.println("*** File " + f + " has been created. ***");
          else
               System.out.println("Searching for file " + f) ;
}How do I use each thread to check for each file exists per sec??
Please Help Thanks

Answer 1

1) Why are you using Threads?
2) It is preferrable to implement Runnable.
3) This is all incredibly pointless (see point 1)