public class UselessCurrentThread implements Runnable {
   	private Thread unknownThread;
   
   	public UselessCurrentThread(Thread t) {
   		unknownThread = t;
   	}
   
   	public void run() {
  		try {
  			// The first should be ok, the next two are silly, the third is
  			// wrong
  			while (!Thread.interrupted()) {
  				System.out.println("huh?");
  				Thread.sleep(10000);
  			}
  
  			while (!Thread.currentThread().interrupted()) {
  				System.out.println("huh?");
  				Thread.sleep(10000);
  			}
  
  			Thread t = Thread.currentThread();
  			while (!t.interrupted()) {
  				System.out.println("huh?");
  				Thread.sleep(10000);
  			}
  
  			while (!unknownThread.interrupted()) {
  				System.out.println("huh?");
  				Thread.sleep(10000);
  			}
  		} catch (InterruptedException ie) {
  			System.out.println("Oh, ok");
  		}
  	}
  }