Creating a counter in java

**Beverly Archer** · 10-03-2010

Hello,
I am new in JAVA and I wanted to make a counter. I come from VB and VB.NET in the IDE and there is a Timer control. I have found no equivalent in Java. I have tried this till now

Code:

import javax.swing.timer

So, if any one can help me with this it would be great. Thanks in advance.

**GlassFish** · 10-03-2010

Hello,
Are you sure you are using this.timer? and not this.Timer1? Moreover, the Timer class from swing is more for graphics applications, if you want a simple timer uses rather java.util.Timer. The setDelay swing timer specifies the time between different events handled by ActionListener. If you just want a time, java.util.Timer. It allows you (via the method schedule) to specify what events should happen at what time.

**WinDoWLoCuS** · 10-03-2010

Hello,
I think you can use the following class to do the same, that is what you require in this case
This is the class to be used

Code:

java.lang.Thread

and here is the code

Code:

try {
   Thread.sleep(time in milliseconds);
}catch(InterruptedException e){
   System.out.System.out.println("Interrupted by another thread");
}

**HardWeaR** · 10-03-2010

Hello,
If you stay with the Timer Swing (there was also java.util.Timer (non-swing) and you can also do this with a simple Thread), You should use:
Here is the code of what I am trying to say

Code:

timer.setRepeats(true);

but it is normally the default behavior. Can you show us the code of the ActionListener you've got your associates Timer plait and the entirety of your initialization step please? Hope this will help you.

**NetworkeR** · 10-03-2010

Hello,
Take a look at the following code, I think this may help you

Code:

Public class Test {

  Public static void hand(String ... args) {
     SwingUtilities.invokeLater(new Runnable() {
        Public void run() { 
           / / final Calendar calendar = Calendar.getInstance ();
           Final DateFormat frm = DateFormat.getTimeInstance(DateFormat.LONG);

           Final javax.swing.Timer tm = new javax.swing.Timer(1000, new ActionListener() {
       
             Public void actionPerformed(ActionEvent event) {
                long lg = System.currentTimeMillis();
                / / calendar.setTimeInMillis (lg);
                / / Date d = calendar.getTime ();
                / / In case of error, use commented lines instead.
                Date d = new Date(lg);
                String out = frm.frm(d);
                System.out.System.out.println(out);
             }
           });
           / / Initialize and configure but.
           Final JToggleButton but = new JToggleButton("Start");
           but.addActionListener(new ActionListener() {
 
             Public void actionPerformed(ActionEvent event) {
                if (but.isSelected()) { 
                  but.setText("Stop");
                  tm.restart();
                }
                else { 
                  but.setText("Start");
                  tm.stop();
                }
             }
           });
           / / Initialize and show jfrm.
           JFrame jfrm = new JFrame("Test");
           jfrm.add(but);
           jfrm.setSize(500, 400);
           jfrm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
           jfrm.setVisible(true);
        }
     });
  }
}

**Linux-Us** · 10-03-2010

Hello,
Be careful though if you continue later with java.util.Timer, It does not run in the EDT, but in a Thread Besides, we must be careful in the changes of Swing components. In general, preferring javax.swing.Timer whether to tweak the GUI. If you need more information on the timer class in java then you can visit the official site of sun and find the api there and search for what ever class and method you need.