ConfirmTest.java
****************
import java.awt.*;
import java.awt.event.*;
/** A Frame that uses the Confirm dialog to verify that
* users really want to quit.
*
public class ConfirmTest extends Frame {
public static void main(String[] args) {
new ConfirmTest();
}
public ConfirmTest() {
super("Confirming QUIT");
setSize(200, 200);
addWindowListener(new ConfirmListener());
setVisible(true);
}
public ConfirmTest(String title) {
super(title);
}
private class ConfirmListener extends WindowAdapter {
public void windowClosing(WindowEvent event) {
new Confirm(ConfirmTest.this);
}
}
}
****************
Confirm.java
****************
dialog box with two buttons: Yes and No
****************
import java.awt.*;
import java.awt.event.*;
/** A modal dialog box with two buttons: Yes and No.
* Clicking Yes exits Java. Clicking No exits the
* dialog. Used for confirmed quits from frames.
********************
class Confirm extends Dialog implements ActionListener {
private Button yes, no;
public Confirm(Frame parent) {
super(parent, "Confirmation", true);
setLayout(new FlowLayout());
add(new Label("Really quit?"));
yes = new Button("Yes");
yes.addActionListener(this);
no = new Button("No");
no.addActionListener(this);
add(yes);
add(no);
pack();
setVisible(true);
}
public void actionPerformed(ActionEvent event) {
if (event.getSource() == yes) {
System.exit(0);
} else {
dispose();
}
}
}
***************