public class RichRobotOwner 
{
   Robot[] myRobots;

   public RichRobotOwner( Robot[] newRobots ) {
      this.myRobots = newRobots;

      int i = 0;

      // switch everyone on.
      while( i < this.myRobots.length )
      {
         this.myRobots[i].switchOn();
         i += 1;
      }

      // Go on vacation in the Cayman Islands.
      try {
         Thread.sleep( 7*24*60*60*1000 );
      } catch ( InterruptedException e ) {
         System.out.println( "Hey! This better be important ..." );
      }

      // switch everone off.
      i = 0;
      while( i < this.myRobots.length ) {
         this.myRobots[i++].switchOn();   // use postincrement to
                                          // automatically inc i *after*
                                          // using it
      }
   }

}