public class stopwatch {
  public long thetime = 0;
  public long stoppedtime = 0;
  public boolean ticking = false;


public static void main(String[] args) {
    stopwatch s = new stopwatch();
    Scanner sc = new Scanner(System.in);
    boolean loop = true;
    while (loop = true) {
        System.out.println("1 start 2 is started 3 stop 4 "
                + "reset 5 check time 6 stop");
        int i = sc.nextInt();
          if (i == 1) {
             s.start();
          } else if (i == 2) {
              System.out.println(s.isStarted());
          } else if (i == 3) {
              s.stop();
          } else if (i == 4) {
              s.reset();
          } else if (i == 5) {
              System.out.println ("saved time is "+ s.time()+" Seconds");
          } else if (i == 6) {
               System.out.println("closing");
               loop = false;
               break;
          } else {
              System.out.println("invalid");
          }

    }

}
      public void   start() {

    if (ticking == true) {
        thetime = thetime;
   } else {
        thetime = System.currentTimeMillis();
        ticking = true;
   }
}
public boolean  isStarted() {
    return ticking;
}

public void stop() {
 if (ticking == false) {
    stoppedtime = stoppedtime;
  } else {
    stoppedtime = thetime;
    ticking = false;
 }
 }


public void reset() {
    thetime = 0;
    stoppedtime = 0;
}
public double   time() {
      double seconds = 1000.000000;
      double currenttime = 0;
      double saved = stoppedtime;
      if (ticking == true) {
          currenttime = ((System.currentTimeMillis() - thetime)/seconds);
          return currenttime;


}else {
          currenttime = (stoppedtime/seconds);
      return currenttime;
      }

}}enter code here