Help with timer in java

barney · #1 (**permalink**) 08-01-2007, 06:30 AM

Hi, I just started playing with timers today, so I'm not too sure what I'm doing. All I want is to get something simple to work... Here I'm trying to display "test" once every second. Why isn't it working? The timer appears to be running, but the actionevent isn't working.

Code:

import javax.swing.Timer;
import java.awt.event.*;

public class TimerTest
{

   public static void main( String args[] )
   {
   int delay = 1000; //milliseconds
   
   ActionListener taskPerformer = new ActionListener()
      {
      public void actionPerformed(ActionEvent evt)
         {
         System.out.println( "test" );
         }
      };

   Timer test = new Timer(delay, taskPerformer);

   test.start();

   System.out.println( test.isRunning() );
   System.out.println( test.getDelay() );

   test.stop();
   System.out.println( test.isRunning() );

   }

}

Thanks

hardwired · #2 (**permalink**) 08-01-2007, 11:24 AM

Code:

import javax.swing.Timer;
import java.awt.event.*;

public class TimerTestRx
{
    public static void main( String args[] )
    {
        int delay = 1000; //milliseconds
   
        ActionListener taskPerformer = new ActionListener()
        {
            int count = 0;
            public void actionPerformed(ActionEvent evt)
            {
                System.out.println( "count = " + count++ );
                if(count > 10) {
                    ((Timer)evt.getSource()).stop();
                    System.exit(0);
                }
            }
        };

        Timer test = new Timer(delay, taskPerformer);

        test.start();

        System.out.println( test.isRunning() );
        System.out.println( test.getDelay() );

        // Can't do much after we get to this statement.
//        test.stop();
        System.out.println( test.isRunning() );
        String s = "<html>We need something to keep the jvm from<br>" +
                   "exiting while we look for some timer activity";
        javax.swing.JOptionPane.showMessageDialog(null, s);
    }
}