Timer Class Issue

[CuppaCoffee]

Hi, I'm try to get this program to count continuously when the timer starts (simple as that), but there's either some code I'm missing or mis-formatting something..

Here's the code:

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

public class TimerExample extends JFrame implements ActionListener
{
  
  private Timer tmrTimer;
  private JLabel lblTimer = new JLabel();
  
  public TimerExample()
  {
    
    tmrTimer = new Timer (1000, this);
    tmrTimer.start();
    
    JPanel pnlTimer = new JPanel();
    
    
    pnlTimer.add(lblTimer);
    add(pnlTimer);
    
    setTitle ("Timer Example");
    setSize(300, 300);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setLocationRelativeTo(null);
    setResizable(false);
    setVisible(true);
  }
  
  public void actionPerformed (ActionEvent e)
  {
    int seconds = 0;
    seconds++;
    lblTimer.setText(Integer.toString(seconds));
  }
  
  public static void main (String[]args)
  {
    new TimerExample();
  }
}

A frame is supposed to pop up with nothing visible on it. Then after an interval of one second, the Timer starts, and displays a number. But after that it doesn't continue to count upwards. Anyone know a way to fix this or a proper solution?

[doWhile]

But after that it doesn't continue to count upwards.

int seconds = 0;
seconds++;

The above code will not count upwards...it will always result in1. Move the seconds variable to be an instance variable.

[pbrockway2]

it doesn't continue to count upwards.

Have a look at what you do in actionPerformed() when there is a "tick":

public void actionPerformed (ActionEvent e)
{
    int seconds = 0;
    seconds++;
    lblTimer.setText(Integer.toString(seconds));
}

You declare and initialise a variable, increment it, and then use its value - which will always be 1 - for the label. Make seconds an instance variable instead, so its value can be remembered from tick to tick.

[CuppaCoffee]

One of my ridiculously silly moments again Why didn't I notice such a mistake..

Thanks everyone for the clearance (or rather sorry for such carelessness )