Problems trying to animate ball with Timer

Question

I trying to animate my ball. I just want it to move up but am having problems when trying to compile. I am getting 3 errorsin fact:
C:\prog1\project_game\GameScreen2.java:24: illegal start of expression
     public void paintComponent(Graphics graphics) {
^
C:\prog1\project_game\GameScreen2.java:35: ';' expected
C:\prog1\project_game\GameScreen2.java:35: '}' expected
The last two errors refere to the final line.
Any help to fix these errors would be great. Here is my code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.Border;
// paints GolfCourse and DistanceBar
class GameScreen2 extends JPanel implements ActionListener {
     GolfCourse gc;
     Ball b;
     Timer timer = null;
     public GameScreen2(){
          /* game loop, freeze timer, computer game actions, start timer.*/     
          timer = new Timer(40, new ActionListener() {
               public void actionPerformed(ActionEvent evt) {
                    timer.start();
                    b.move();
                    repaint();
       public void paintComponent(Graphics graphics) {
         Graphics2D g = (Graphics2D) graphics;
         super.paintComponent(g); //paint background
          GolfCourse gc = new GolfCourse();
          Ball b = new Ball();
          gc.drawCourse(g);
          b.drawBall(g);
   }

Answer 1

The only place I feel may require an extra brace is at the end of the constructor. If I add one there I get the following error:
C:\prog1\project_game\GameScreen2.java:8: GameScreen2 is not abstract and does not override abstract method actionPerformed(java.awt.event.ActionEvent) in java.awt.event.ActionListener
class GameScreen2 extends JPanel implements ActionListener {
^