Making a button do something

Question

import java.awt.*;
import java.awt.event.*;
public final class ErrorMessage extends Dialog
private Button b1;
ErrorMessage(Frame frame, String s, String s1)
super(frame, s, true);
GridBagLayout gridbaglayout = new GridBagLayout();
setLayout(gridbaglayout);
GridBagConstraints gridbagconstraints = new GridBagConstraints();
Label label = new Label(s1);
gridbagconstraints.gridwidth = 0;
gridbagconstraints.gridheight = 1;
gridbagconstraints.fill = 1;
gridbagconstraints.weightx = 1.0D;
gridbagconstraints.weighty = 1.0D;
gridbaglayout.setConstraints(label, gridbagconstraints);
add(label);
Panel panel = new Panel();
gridbagconstraints.gridwidth = 1;
gridbagconstraints.gridheight = 1;
gridbagconstraints.fill = 1;
gridbagconstraints.weightx = 1.0D;
gridbagconstraints.weighty = 1.0D;
gridbaglayout.setConstraints(panel, gridbagconstraints);
add(panel);
Button b1 = new Button("OK");
gridbagconstraints.gridwidth = 1;
gridbagconstraints.gridheight = 1;
gridbagconstraints.fill = 1;
gridbagconstraints.weightx = 0.0D;
gridbagconstraints.weighty = 1.0D;
gridbaglayout.setConstraints(b1, gridbagconstraints);
add(b1);
b1.addActionListener(this);
panel = new Panel();
gridbagconstraints.gridwidth = 0;
gridbagconstraints.gridheight = 1;
gridbagconstraints.fill = 1;
gridbagconstraints.weightx = 1.0D;
gridbagconstraints.weighty = 1.0D;
gridbaglayout.setConstraints(panel, gridbagconstraints);
add(panel);
validate();
pack();
setResizable(false);
     public void actionPerformed(ActionEvent e)
     setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
          setVisible(false);
     dispose();
System.exit(0);
setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
every time i try to compile this code i get this error -
.\ErrorMessage.java:37: addActionListener(java.awt.event.ActionListener) in java.awt.Button cannot be applied to (ErrorMessage)
b1.addActionListener(this);
^
neone have ne idea how to solve this problem?

Answer 1

thats only for getting the window to close when you
press the x in the corner or using Alt+F4 isn't it -
i'm just trying to get the button to close itTrue. I didn't read your post properly.
My question now: Do you know what this line means?
b1.addActionListener(this);Anyway... the argument of that menthod has to be a subclass of ActionListener.. suggest you look at simple GUI tutorials available on this website on how to do it.