清华大学：JAVA教学课件：8-13

程序8-13：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JDialogDemo implements ActionListener {
JFrame frame ;
JDialog dialog ;
JButton button ;
public static void main(String args[]) {
JDialogDemo jd = new JDialogDemo();
jd.go();
}
public void go() {
frame = new JFrame ("JDialog Demo");
dialog = new JDialog(frame,"Dialog",true);
dialog.getContentPane().add(new JLabel("Hello,I'm a Dialog"));
//在对话框中添加组件
dialog.setSize(60,40);

button = new JButton("Show Dialog");
button.addActionListener(this);

Container cp = frame.getContentPane();
cp.add(button,BorderLayout.SOUTH);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(200,150);
frame.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
// 显示对话框
dialog.setVisible(true);
}
}