Java-Swing编程之对话框案例详解

package com.xushouwei.cn.photo;

 

import java.awt.GraphicsConfiguration;

import java.awt.GridLayout;

import java.awt.HeadlessException;

 

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.SwingConstants;

import javax.swing.SwingUtilities;

import javax.swing.UIManager;

 

public class FeedInfo extends JFrame {

 

        

         private JLabel jl1,jl2,jl3;

         private JTextField jtf1,jtf2,jtf3;

         private JPanel jp1;

        

         public FeedInfo(){

                   // TODO Auto-generated constructor stub

                   super("Feed Information");

                   setSize(400,105);

                   setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

                   jl1=new JLabel("Name:",SwingConstants.RIGHT);

                   jl2=new JLabel("URL:",SwingConstants.RIGHT);

                   jl3=new JLabel("Type:",SwingConstants.RIGHT);

                   String response1=JOptionPane.showInputDialog(null,"Enter the site name:");

                   jtf1=new JTextField(response1,20);

                   String response2=JOptionPane.showInputDialog(null,"Enter the site address:");

                   jtf2=new JTextField(response2,20);

                   String[] choices={"Personal","Commercial","Unknown"};

                   int response3=JOptionPane.showOptionDialog(null, "What type of site is it?", "Site Type", 0, JOptionPane.QUESTION_MESSAGE, null, choices, choices[0]);

                   jtf3=new JTextField(choices[response3],20);

                  

                   this.setLayout(new GridLayout(3,2));

                   this.add(jl1);

                   this.add(jtf1);

                   this.add(jl2);

                   this.add(jtf2);

                   this.add(jl3);

                   this.add(jtf3);

                  

                   this.setLookAndFeel();

                   this.setVisible(true);

                  

         }

 

         private void setLookAndFeel() {

                   // TODO Auto-generated method stub

                   try {

                            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

                            SwingUtilities.updateComponentTreeUI(this);

                   } catch (Exception e) {

                            // TODO: handle exception

                            e.printStackTrace();

                   }

                  

         }

 

         /**

          * @param args

          */

         public static void main(String[] args) {

                   // TODO Auto-generated method stub

                   FeedInfo fi=new FeedInfo();

 

         }

 

}