What am I doing wrong with this Java JPanel/JFrame/JButton?

Question

What am I doing wrong with this Java JPanel/JFrame/JButton? This is my program and right now I've been trying to be able to repaint it, but it won't work. Please help! I am a beginner with JPanel and JFrame . I'm only adding this sentence to allow it to post.

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

public class Clicks implements MouseListener
{
    private static int clicks, clickersInt, clickersCost;
    private static JButton clickersB, click;
    private static JLabel clickersL, clicksL;
    private static JPanel panel;

    public static void main(String[] args)
    {
        JFrame clicksFrame=new JFrame ("Clicks");
        clicksFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        clicks=0;

        panel=new JPanel(new GridBagLayout());

        click=new JButton("Click Me!");
        clickersB=new JButton("Cost: 10");
        clickersL=new JLabel("Clickers: "+Integer.toString(clickersInt));
        clicksL=new JLabel("Clicks: "+Integer.toString(clicks));

        click.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent event)
            {
                clicks++;
                clicksFrame.remove(panel);
                clicksFrame.add(panel);
                panel.validate();
                panel.repaint();
            }
        });

        clickersB.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent event)
            {
                if(clicks>=clickersCost)
                {
                    clickersInt++;
                    clicks-=clickersCost;
                    clickersCost*=2;
                }
            }
        });
        panel.add(click);
        panel.add(clicksL);
        panel.add(clickersL);
        panel.add(clickersB);

        clicksFrame.add(panel);
        clicksFrame.setBackground(Color.CYAN);
        clicksFrame.setVisible(true);
    }
}

Answer 1

So, based on this little snippet...

click=new JButton("Click Me!");
clickersB=new JButton("Cost: 10");
clickersL=new JLabel("Clickers: "+Integer.toString(clickersInt));
clicksL=new JLabel("Clicks: "+Integer.toString(clicks));

click.addActionListener(new ActionListener()
{
    public void actionPerformed(ActionEvent event)
    {
        clicks++;
        clicksFrame.remove(panel);
        clicksFrame.add(panel);
        panel.validate();
        panel.repaint();
    }
});

I would suggest that what you really want to do is...

click.addActionListener(new ActionListener()
{
    public void actionPerformed(ActionEvent event)
    {
        clicks++;
        clicksL.setText("Clicks: "+Integer.toString(clicks));
    }
});

You seem to be of the illusion that changing a variable will some how change another variable which is just a string of characters. As you've discovered, that's not how this works