public class PW11 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args)   {
        int i=0;
         long startTime = System.currentTimeMillis();
        do{


        Thread ob=new Thread();

        ob.start();
            try {
                ob.join();
            } catch (InterruptedException ex) {
                Logger.getLogger(PW11.class.getName()).log(Level.SEVERE, null, ex);
            }
++i;
        }while(i<1000);

             long endTime = System.currentTimeMillis();
          System.out.println("czas: "+(endTime-startTime) );

    }

}



//502ms/1000=0.502ms