Please help me with my Java Countdown Timer

Hello generous java coders!I am really in a desperate situation now. I have a working gui code here:

Code Java:

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import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
 
public class CountdownTimer extends JFrame  {
 
    JLabel promptLabel, timerLabel;
    int counter;
    JTextField tf;
    JButton button;
    Timer timer;
 
    public CountdownTimer() {
        setLayout(new GridLayout(2, 2, 5, 5));
        promptLabel = new JLabel("Enter time: ", SwingConstants.CENTER);
        add(promptLabel);
 
        tf = new JTextField(5);
        add(tf);
 
        button = new JButton("Start timing");
        add(button);
 
        timerLabel = new JLabel("Waiting...", SwingConstants.CENTER);
        add(timerLabel);
 
        event e =  new event();
        button.addActionListener(e);
 
 
    }
 
 
    public void actionPerformed(ActionEvent e) {
        throw new UnsupportedOperationException("Not supported yet.");
    }
 
 
    public void run() {
        throw new UnsupportedOperationException("Not supported yet.");
    }
 
    public class event implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            int count = (int)(Double.parseDouble(tf.getText()));
            timerLabel.setText("Time left: " + count);
 
            TimeClass tc = new TimeClass(count);
            timer = new Timer(1000, tc);
            timer.start();
 
        }
    }
 
    public class TimeClass implements ActionListener {
        int counter;
 
        public TimeClass(int counter) {
            this.counter= counter;
 
   }
        public void actionPerformed(ActionEvent tc) {
            counter--;
 
            if(counter >= 1) {
                timerLabel.setText("Time left: " + counter);
 
            }
            else {
                timer.stop();
                timerLabel.setText("Done!");
                Toolkit.getDefaultToolkit().beep();
 
            }
        }
    }
    public static void main(String args[]) {
        CountdownTimer gui = new CountdownTimer();
        gui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        gui.setSize(250, 100);
        gui.setTitle("Timer Program");
        gui.setVisible(true);
 
    }
 
}

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My task is to make a gui countdown timer for a speech contest. Please help me convert it into a gui wherein when the user creates a new "session". User should be able to input the speaker's name, duration of speech(this is where the code above comes in. The code I have pasted above is only a Second Timer please help me convert it into a Minute timer as well. example: 7:00 -> 6:59 -> 6:58 so on and so forth), the speech title and a drop down box with two values: formal speech/table topics). Lastly, user should also be able to save time to a file. I am really desperate for you help guys. Please do help me :( Please please

What would the user input for a minute timer?
Then how would that value be saved and displayed?

Quote:

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Originally Posted by Norm

What would the user input for a minute timer?
Then how would that value be saved and displayed?

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Hello, thank you so much for your response. The user should be able to input the name of the speaker, the speech duration,title of the speech and a drop down box these inputs should be saved into a file. Thank you!

What happened to the input and display of the time?

For the other stuff, take a look at how to write a Swing GUI:
Trail: Creating a GUI With JFC/Swing (The Java™ Tutorials)

And how to write to files:
Lesson: Basic I/O (The Java™ Tutorials > Essential Classes)