package TomAwt;

 import java.awt.*;

 import java.awt.event.*;

 public class TomAwt_15 extends Frame implements ActionListener{

     Button b=new Button("打开对话框");

     //create a model dialog object whose owner is this frame

     Dialog dlg=new Dialog(this,"你好",true);

     public TomAwt_15(){

         super("对话框示例");

         add(b);

         b.addActionListener(this);

         pack();        //使框架尺寸适应组件的大小

         setVisible(true);

     }

     //handle the button_click events

     public void actionPerformed(ActionEvent e){

         dlg.setLayout(new FlowLayout());

         dlg.add(new Label("你好"));

         dlg.add(new Button("确定"));

         dlg.setSize(100,60);

             //show the dialog

         dlg.show();

     }

     public static void main(String[] args){

         new TomAwt_15();

     }

 }