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  1. #1
    Join Date
    Mar 2009
    Posts
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    Default ActionListener Error

    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.

    Java Code:
    
    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 
            }  
    
    }
    }
    Last edited by blackstormattack; 03-08-2009 at 07:20 PM.

  2. #2
    pbrockway2 is offline Moderator
    Join Date
    Feb 2009
    Location
    New Zealand
    Posts
    4,565
    Rep Power
    12

    Default

    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:

    Java Code:
    public class Start extends JFrame implements ActionListener {

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