testjdialog.java

java2 primer plus一书源程序

/*
 * TestJDialog.java
 *
 * Created on July 30, 2002, 2:36 PM
 */

package ch16;

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

/**
 *
 * @author  Stephen Potts
 * @version
 */
public class TestJDialog extends JFrame implements ActionListener
{
    JButton btnExit;
    JButton btnYes;
    JButton btnNo;
    JDialog dlgConfirm;
    
    /** Creates new TestJDialog */
    public TestJDialog()
    {
        btnExit = new JButton("Exit");
        btnExit.addActionListener(this);
        
        getContentPane().add(btnExit);
        this.getContentPane().setLayout(new FlowLayout());
        
        dlgConfirm = new JDialog(this);
        dlgConfirm.setResizable(false);
        
        btnYes = new JButton("Yes");
        btnYes.addActionListener(this);
        
        btnNo = new JButton("No");
        btnNo.addActionListener(this);
        
        dlgConfirm.getContentPane().add(btnYes);
        dlgConfirm.getContentPane().add(btnNo);
        dlgConfirm.setTitle("Are you sure?");
        
        dlgConfirm.setSize(200, 100);
        dlgConfirm.getContentPane().setLayout(new FlowLayout());
        
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setTitle("Using a JDialog");
        setBounds( 100, 100, 300, 300);
        setVisible(true);
        
    }
    
    public void actionPerformed(ActionEvent ae)
    {
        if (ae.getActionCommand().equals("Exit"))
            dlgConfirm.show();
        if (ae.getActionCommand().equals("Yes"))
            System.exit(0);
        if (ae.getActionCommand().equals("No"))
            dlgConfirm.setVisible(false);
    }
    
    public static void main(String[] args)
    {
        TestJDialog td = new TestJDialog();
    }
    
}