CODEWITHSUNDEEP
javadatetimer
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Reputation: 404

How to choose a time/date and put it into a timer-task?

As I corrected my use of some features instead of others, I post this. I try to use JSpinner to choose a Date and Time and put it then into a timer and the trigger must be the Date and Time I choosed.

How could I use it to change the time too by moving the arrows and to put the date and time in the timer ?

    import java.awt.BorderLayout;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JSpinner;
    import javax.swing.SpinnerDateModel;
    import javax.swing.SpinnerModel;
    import java.util.Calendar;
    import java.util.Date;
    import javax.swing.Timer;

    public class SpinnerDateSample {
     public static void main(String args[]) {
     JFrame frame = new JFrame("JSpinner Sample");
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


     SpinnerModel model1 = new SpinnerDateModel();
     JSpinner spinner1 = new JSpinner(model1);
     spinner1.addChangeListener(new CalendarListener());

     JLabel label1 = new JLabel("Dates/Date");
     JPanel panel1 = new JPanel(new BorderLayout());
     panel1.add(label1, BorderLayout.WEST);
     panel1.add(spinner1, BorderLayout.CENTER);
     frame.add(panel1, BorderLayout.CENTER);

     frame.setSize(200, 90);
     frame.setVisible(true);
    }
   }

   private class CalendarListener implements ChangeListener {
    public void stateChanged(ChangeEvent e)  {
     JSpinner jSpinner = (JSpinner) e.getSource();
     Date date = (Date) jSpinner.getValue();
     long delay = date.getTime() - System.currentTimeMillis();
      timerStart();
      if (delay > 0) {
      timer.setInitialDelay((int) delay);
      timer.restart();
     }
    }   
   }

   TimerStart() {
    this.timer = new Timer(Integer.MAX_VALUE, (ActionEvent evt) -> {
     System.out.println("okey");
   });}

Upvotes: 0

Views: 116

Answers (1)

Vasu
Vasu

Reputation: 22422

TimerTask is a legacy class, rather you can use ScheduledExecutorService for executing a task at scheduled intervals, which is a best practice as shown below:

Selection6Runable class:

public class Selection6Runable implements Runnable {
         public void run() {
              //Add code for Selection6 Logic, 
             // this code will be run everytime when the scheduler runs
          }
     }

Using the above code:

ScheduledExecutorService scheduledService= Executors.newScheduledThreadPool(1);
//Change the below time interval according 
//to the data received i.e., CalDcB.getSelectedItem()
scheduledService.scheduleAtFixedRate(()-> new Selection6Runable(), 
                        0, 1000L, TimeUnit.MILLISECONDS);

You can look here for more details

Upvotes: 1

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