How To Make The Score Appear In The JFrame

I was thinking to make a game where a button is appearing in random spots and you have to click it, and once you click it you're score goes up. But I don't know how to make the score appear in the JFrame, and I want the score to update everytime the Button is Clicked.

Here is the code:

Java Code:

package clickmegame;
import java.awt.Dimension;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class ClickMeGame {
public static void main(String[] args) {

[Code]...