import java.util.Date;
public class Aeg{
  public static void main(String argumendid[]) throws Exception{
     long algaeg=new Date().getTime();
     Thread.sleep(3000);
     long loppaeg=new Date().getTime();
     long vaheaeg=loppaeg-algaeg;
     System.out.println("Kahe aja vahet oli "+vaheaeg+" millisekundit.");
  }
}