Esse cód não funciona o que esta errado?
import javax.swing.;
import java.awt.BorderLayout;
import java.awt.event.;
public class SimpleGui1B implements ActionListener{
JButton button;
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
SimpleGui1B gui = new SimpleGui1B();
gui.go();
}
public void go(){
	JFrame frame = new JFrame();
	button = new JButton("click me");
	
	button.addActionListener(this);
	
	MyDrawPanel panel = new MyDrawPanel();
	frame.getContentPane().add(BorderLayout.NORTH, panel);
	
	frame.getContentPane().add(BorderLayout.SOUTH, button);
	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	frame.setSize(300, 300);
	
	frame.setVisible(true);
}
public void actionPerformed(ActionEvent event){
	button.setText("I've bee clicke");
}
}
import javax.swing.;
import java.awt.;
public class MyDrawPanel extends JPanel{
public void paintComponent(Graphics g){
	///super.paintComponent(g);
	
	setBackground(Color.black);
	g.setColor(Color.blue);
	g.fillRect(10, 10, 100, 100);
	g.fillOval(70, 70, 100, 100);*/
}
}