[java] time gate

import java.util.Calendar;
import java.util.Date;

public class TimeGate {
   // a gate that only opens x minutes after it has been set
   private int pause = 1;
   private Date openedGate = addMinutesToJavaUtilDate(new Date(), pause);

   public TimeGate(int minutes) {
      super();
      this.pause = minutes;
   }
   public TimeGate() {
   }
   public Boolean isClosed() {
      return !openedGate.before(new Date());
   }
   public void close() {
      this.openedGate = addMinutesToJavaUtilDate(new Date(), pause);
   }
   public void close(int minutes) {
      Date now = new Date();
      openedGate = addMinutesToJavaUtilDate(now, minutes);
   }
   private Date addMinutesToJavaUtilDate(Date date, int minutes) {
       Calendar calendar = Calendar.getInstance();
       calendar.setTime(date);
       calendar.add(Calendar.MINUTE, minutes);
       return calendar.getTime();
   }
   public void setPause(int pause) {
      if(pause <60 && pause >0) {
      this.pause = pause;}
   }
}