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Thread: Help getting current time to start

  1. #1
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    Default Help getting current time to start

    My issue is I can't get the current time to start counting by seconds for example 22:17:51 - 22:17:52 - 22:17:53. Any help will be greatly appreciated and here is my code so far. I can get the time to display just not start.

    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.Timer;
    import java.util.Date;
    import java.text.DateFormat;
    import java.text.SimpleDateFormat;
     
    public class TimeCounter extends JFrame
    {  //instance variables
       JLabel counterLabel;
       int count = 1;
       //inner class to listen to Timer
       DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss ");
       //get current date time with Date()
    	Date date = new Date();
     
       class TimerListener implements ActionListener
       {   
          public void actionPerformed(ActionEvent event)
          {
           counterLabel.setText(dateFormat.format(date));        
          }
       }
     
       //constructor for SecondCounter and JFrame
       public TimeCounter()
       {
          setSize(200, 100);
          counterLabel = new JLabel("Date: "+date);
          add(counterLabel);
          ActionListener listener = new TimerListener();
          // Milliseconds between timer ticks
          final int DELAY = 1000;       
          Timer t = new Timer(DELAY, listener);
          t.start();   //start the time   
       }
    }

    then the driver

     
    import javax.swing.JFrame;
     
    /** 	 	 	 	 	 	
       This program moves the rectangle.
    */
    public class TimeCounterViewer
    {
       public static void main(String[] args)
       {
          JFrame frame = new TimeCounter();
          frame.setTitle("Time Counter");
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          frame.setVisible(true);
       }
    }

    Thanks for taking the time to look at my code and help.


  2. #2
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    Default Re: Help getting current time to start

    If you are expecting to see a display that keeps ticking over like a clock then you will need to continually update your GUI to display the new time each second.
    Improving the world one idiot at a time!

  3. #3
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    Default Re: Help getting current time to start

    How do I continually update the GUI exactly ?? That is exactly what I'm trying to do.

  4. #4
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    Default Re: Help getting current time to start

    Google for a java tutorial.
    Improving the world one idiot at a time!

  5. #5
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    Default Re: Help getting current time to start

    you should use repaint() method that change the value of counterLabel.

  6. #6
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    Default Re: Help getting current time to start

    int delay = 1000; //milliseconds
    ActionListener taskPerformer = new ActionListener() {
    public void actionPerformed(ActionEvent evt) {
    //...Perform a task...
    }
    };
    new Timer(delay, taskPerformer).start();
    ... from api

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