class Racer implements Runnable {
     int d = 42

     public void run () {
          doSomething(1001)
          d = 0                              // (1)
     }

     static void main (String[] args){
          Racer racer = new Racer()
          Thread t = new Thread(racer)
          t.start()

          doSomething(1000)
          int c = 420 / racer.d              // (2)
          println c
     }
     
     def doSomething (int n) {
          try { 
          	Thread.sleep(n) 
          } catch (InterruptedException ix) {}
     }
}