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I had thought of something.

If you're planning to use that JList for something to do that makes the value of playervalue1 change, then perhaps you should add a ListSelectionListener to it.

See...

Well, before, your code wouldn't even compile.

I moved some things to initComponents() so that it would at least compile.

I've gotten it to compile and show some stuff now.


package match.bonus.calculator;
import java.util.Timer;
import java.util.TimerTask;
import javax.swing.*;
import java.awt.*;...

A button turn the timer on?

Perhaps add an ActionListener to the Toggle Button.

I think I found that a bunch of code appears in the middle of nowhere outside any methods.

Where does this go:

private javax.swing.JLabel jLabel1;
public javax.swing.JList jList1;...

Wait, playerscore1 is a double.

You'll have to make it a Double and then call a toString() as you must set the text to a String.

Double ps1 = playerscore1;

String text = ps1.toString();
...

What is playscore1?

Could you try using the setText() method?

If playscore1 is a JLabel or something like that, can't do something like this

JTextArea area = new JTextArea(100,100);...