showdialog.java

一个显示对话框的小程序

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

public class showdialog extends JFrame
{
   private JLabel titleLabel=new JLabel("Title: ",SwingConstants.RIGHT);
   private JTextField title;
   private JLabel addressLabel=new JLabel("address: ",SwingConstants.RIGHT);
   private JTextField address;
   private JLabel typeLabel=new JLabel("type: ",SwingConstants.RIGHT);
   private JTextField type;

  public showdialog()
  {
    super("site Information");
    addWindowListener(new quitEvent());  //Event
    String response1=JOptionPane.showInputDialog(null,"Enterth");
    title =new JTextField(response1,20);
  
    String  response2=JOptionPane.showInputDialog(null,"address");
    address=new JTextField(response2,20);
    
    String[] choices={"personal","Commercial","unknown"};
    int response3=JOptionPane.showOptionDialog(null,"type","site",0,JOptionPane.QUESTION_MESSAGE,null,choices,choices[0]);
    type=new JTextField(choices[response3],20);
   
    JPanel pane=new JPanel();
    pane.setLayout(new GridLayout(3,2));
    pane.add(titleLabel);
    pane.add(title);
    pane.add(addressLabel);
    pane.add(address);
    pane.add(typeLabel);
    pane.add(type);
 
    setContentPane(pane);
  }

  public static void main(String args[])
  {
    try
     {
        UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName());
    } catch(Exception e)
       {
        System.err.println("Couldn't use the system "+"look and feel: "+e);}

   showdialog frame=new showdialog();
   frame.pack();
   frame.setVisible(true);
  }
}