ActionListener Error

[blackstormattack]

Hi, every time I try to compile the code below I get the following error: "addActionListener(java.awt.event.ActionListen er) in javax.swing.AbstractBunnon cannot be applied to (Start)"

Can Anyone help me?
Thanks in advance.

public class Start extends JFrame{

 
  public static void main(String[] args) { 
    new Start();
  }

  public Start() {
    
    JFrame f = new JFrame("Menu");
    f.setSize(500, 500);
    
    Container content = f.getContentPane(); 
    content.setBackground(Color.blue); 
    content.setLayout(new FlowLayout());
    JButton button1 = new JButton("Nieuw Spel"); //knop 1
    content.add(button1);
    f.setVisible(true);
    
    button1.setToolTipText("blablabla");
    
  }
  public void actionPerformed(ActionEvent event)
  {
       if(event.getSource() == button1){ //EVENT BUTTON 1 NOT NIET IN ORDE 
        }  

}
}

[pbrockway2]

When you use addActionListener() you have to use an argument that is an instance of the the ActionListener interface. Your Start does not implement ActionListener unless you explicitly say so:

public class Start extends JFrame implements ActionListener {