File directory chooser

Question

this code for file directory chooser runs in standalone java programs. i need it for a web app, can someone help me manipulate this to do so?
package ETPS.web.service;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.util.*;
public class DemoJFileChooser extends JPanel
   implements ActionListener {
   JButton go;
   JFileChooser chooser;
   String choosertitle;
  public DemoJFileChooser() {
    go = new JButton("Do it");
    go.addActionListener(this);
    add(go);
  public void actionPerformed(ActionEvent e) {
    int result;
    chooser = new JFileChooser();
    chooser.setCurrentDirectory(new java.io.File("."));
    chooser.setDialogTitle(choosertitle);
    chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
    // disable the "All files" option.
    chooser.setAcceptAllFileFilterUsed(false);
    if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
      System.out.println("getCurrentDirectory(): "
         +  chooser.getCurrentDirectory());
      System.out.println("getSelectedFile() : "
         +  chooser.getSelectedFile());
    else {
      System.out.println("No Selection ");
  public Dimension getPreferredSize(){
    return new Dimension(200, 200);
  public static void main(String s[]) {
    JFrame frame = new JFrame("");
    DemoJFileChooser panel = new DemoJFileChooser();
    frame.addWindowListener(
      new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
          System.exit(0);
    frame.getContentPane().add(panel,"Center");
    frame.setSize(panel.getPreferredSize());
    frame.setVisible(true);
}

Answer 1

AndrewThompson64 wrote:
BIJ001 wrote:
If we are talking about a web application, then the browser will use its file chooser when down- or uploading a file.++++
The only way to shoe-horn that code into a web page is via an applet. The applet would need to be either
a) Trusted, or..
b) Deployed in a plug-in2 JRE and use the JNLP API services to get access to an InputStream.
Either way, applets are a PITA for both the developer and (usually) the user. Stick to pure HTML in web-apps, wherever possible.
Edited by: AndrewThompson64 on May 31, 2010 9:51 PMI've also seen some attempts with Google Gears. Even file drag & drop support. It works quite neat, if the user doesn't have gears installed you get a nice requester for it. Don't know what the system requirements are for that product though.