Variable NumClicks Adds All Of The Button Clicks Together?

import javax.swing.*; //import javax swing package
import java.awt.*; //import java awt package
import java.awt.event.*; //import java awt event package
public class JPizzaSize extends JFrame implements ActionListener //class name
{
final int SMALL = 7;
final int MEDIUM = 9;

[code]....

My variable numClicks counts all of the clicks on every button instead of each individual button and adds the cumulative total to the JTextField. What have I missed? If I click button1 twice, $14 appears in the text field, then if I click button2, $27 appears in the text field instead of $23. I though that numClicks would stop counting at the end of the curly bracket for that block of code?