Adding files from JFileChooser to Jlists

Question

i have created a JList i am wondering how i can add files to this Jlist using a JFile chooser.
i need to add the actual file with the path and everything i also need to add the contents of a directory into the jList if selected in the Filechooser.
i have no problem creating a JFilechooser dialog.
please help me out.

Answer 1

Hi,
I gave an example how to use the filechosser and filefilter [url http://forum.java.sun.com/thread.jsp?forum=57&thread=435432]here.
I think its also where you got the source code above.
Compactly and performable:import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
class Player2 extends JFrame
     public static final int DELAY = 10;
     JButton playButton;
     private JButton Shuffle;
     private JButton stopButton;
     Timer playTimer;
     private JLabel aMessage;
     private JButton openButton;
     JList playList = null;
     JPanel aPanel;
     JFileChooser theFileChooser = new JFileChooser();
     AudioFileFilter filter = new AudioFileFilter();
     JFrame win = new JFrame("AudioPlayer");
     class playTimerListener extends AbstractAction
          public void actionPerformed(ActionEvent e)
               //myPlayer.play();
     class OpenFileChooserAction extends AbstractAction
          public void actionPerformed(ActionEvent e)
               int retVal = theFileChooser.showOpenDialog(aPanel);
               if (retVal == JFileChooser.APPROVE_OPTION)
                    File[] files = theFileChooser.getSelectedFiles();
                    DefaultListModel model = (DefaultListModel) playList.getModel();
                    model.clear();
                    for (int i = 0; i < files.length; i++)
                         if (files.isDirectory())
                              String[] filesInDirectory = files[i].list();
                              for (int ii = 0; ii < filesInDirectory.length; ii++)
                                   File f = new File(files[i].getPath() + "/" + filesInDirectory[ii]);
                                   //to prevent subdirectories to be added to the list
                                   if (f.isFile() && filter.accept(f))
                                        model.addElement(filesInDirectory[ii]);
                         else
                              if (filter.accept(files[i]))
                                   model.addElement(files[i]);
     class playButtonActionListener extends AbstractAction
          public void actionPerformed(ActionEvent e)
               System.out.println("Playing...");
               playTimer.start();
     class stopButtonActionListener extends AbstractAction
          public void actionPerformed(ActionEvent e)
               System.out.println("Stopped!");
               playTimer.stop();
     public Player2(String s)
          super(s);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          playTimer = new Timer(DELAY, new playTimerListener());
          theFileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
          theFileChooser.setMultiSelectionEnabled(true);
          theFileChooser.setFileFilter(filter);
          theFileChooser.setFileHidingEnabled(false);
          makeMyGUI();
          pack();
          show();
     private void makeMyGUI()
          aMessage = new JLabel("Nothing selected yet", JLabel.CENTER);
          JScrollPane listScroll = new JScrollPane(playList = new JList(new DefaultListModel()));
          listScroll.setPreferredSize(new Dimension(200, 200));
          playList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
          playButton = new JButton(new playButtonActionListener());
          playButton.setText("play...");
          stopButton = new JButton(new stopButtonActionListener());
          stopButton.setText("stop...");
          openButton = new JButton(new OpenFileChooserAction());
          openButton.setText("Open...");
          openButton.setBackground(Color.yellow);
          Shuffle = new JButton("Shuffle");
          aPanel = new JPanel();
          aPanel.setBackground(Color.blue);
          aPanel.add(openButton);
          aPanel.add(playButton);
          aPanel.add(stopButton);
          getContentPane().add(listScroll, "Center");
          getContentPane().add(aPanel, "North");
          getContentPane().add(aMessage, "South");
     class AudioFileFilter extends FileFilter
          public boolean accept(File f)
               if (f.isDirectory())
                    return true;
               String extension = Utils.getExtension(f);
               if (extension != null)
                    if (extension.equals(Utils.wav)
                         || extension.equals(Utils.aif)
                         || extension.equals(Utils.rmf)
                         || extension.equals(Utils.au)
                         || extension.equals(Utils.mid))
                         return true;
                    else
                         return false;
               return false;
          public String getDescription()
               return "wav, aif, rmf, au and mid";
     public static void main(String[] args)
          try
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
          catch (Exception e)
               e.printStackTrace();
          new Player2("MP3 PLAYER");
class Utils
     public final static String wav = "wav";
     public final static String aif = "aif";
     public final static String rmf = "rmf";
     public final static String au = "au";
     public final static String mid = "mid";
     * Get the extension of a file.
     public static String getExtension(File f)
          String ext = null;
          String s = f.getName();
          int i = s.lastIndexOf('.');
          if (i > 0 && i < s.length() - 1)
               ext = s.substring(i + 1).toLowerCase();
          return ext;
//without formatting
import java.awt.*;
import java.awt.event.*;
import java.io.File;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
class Player2 extends JFrame
     public static final int DELAY = 10;
     JButton playButton;
     private JButton Shuffle;
     private JButton stopButton;
     Timer playTimer;
     private JLabel aMessage;
     private JButton openButton;
     JList playList = null;
     JPanel aPanel;
     JFileChooser theFileChooser = new JFileChooser();
     AudioFileFilter filter = new AudioFileFilter();
     JFrame win = new JFrame("AudioPlayer");
     class playTimerListener extends AbstractAction
          public void actionPerformed(ActionEvent e)
               //myPlayer.play();
     class OpenFileChooserAction extends AbstractAction
          public void actionPerformed(ActionEvent e)
               int retVal = theFileChooser.showOpenDialog(aPanel);
               if (retVal == JFileChooser.APPROVE_OPTION)
                    File[] files = theFileChooser.getSelectedFiles();
                    DefaultListModel model = (DefaultListModel) playList.getModel();
                    model.clear();
                    for (int i = 0; i < files.length; i++)
                         if (files[i].isDirectory())
                              String[] filesInDirectory = files[i].list();
                              for (int ii = 0; ii < filesInDirectory.length; ii++)
                                   File f = new File(files[i].getPath() + "/" + filesInDirectory[ii]);
                                   //to prevent subdirectories to be added to the list
                                   if (f.isFile() && filter.accept(f))
                                        model.addElement(filesInDirectory[ii]);
                         else
                              if (filter.accept(files[i]))
                                   model.addElement(files[i]);
     class playButtonActionListener extends AbstractAction
          public void actionPerformed(ActionEvent e)
               System.out.println("Playing...");
               playTimer.start();
     class stopButtonActionListener extends AbstractAction
          public void actionPerformed(ActionEvent e)
               System.out.println("Stopped!");
               playTimer.stop();
     public Player2(String s)
          super(s);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          playTimer = new Timer(DELAY, new playTimerListener());
          theFileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
          theFileChooser.setMultiSelectionEnabled(true);
          theFileChooser.setFileFilter(filter);
          theFileChooser.setFileHidingEnabled(false);
          makeMyGUI();
          pack();
          show();
     private void makeMyGUI()
          aMessage = new JLabel("Nothing selected yet", JLabel.CENTER);
          JScrollPane listScroll = new JScrollPane(playList = new JList(new DefaultListModel()));
          listScroll.setPreferredSize(new Dimension(200, 200));
          playList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
          playButton = new JButton(new playButtonActionListener());
          playButton.setText("play...");
          stopButton = new JButton(new stopButtonActionListener());
          stopButton.setText("stop...");
          openButton = new JButton(new OpenFileChooserAction());
          openButton.setText("Open...");
          openButton.setBackground(Color.yellow);
          Shuffle = new JButton("Shuffle");
          aPanel = new JPanel();
          aPanel.setBackground(Color.blue);
          aPanel.add(openButton);
          aPanel.add(playButton);
          aPanel.add(stopButton);
          getContentPane().add(listScroll, "Center");
          getContentPane().add(aPanel, "North");
          getContentPane().add(aMessage, "South");
     class AudioFileFilter extends FileFilter
          public boolean accept(File f)
               if (f.isDirectory())
                    return true;
               String extension = Utils.getExtension(f);
               if (extension != null)
                    if (extension.equals(Utils.wav)
                         || extension.equals(Utils.aif)
                         || extension.equals(Utils.rmf)
                         || extension.equals(Utils.au)
                         || extension.equals(Utils.mid))
                         return true;
                    else
                         return false;
               return false;
          public String getDescription()
               return "wav, aif, rmf, au and mid";
     public static void main(String[] args)
          try
               UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
          catch (Exception e)
               e.printStackTrace();
          new Player2("MP3 PLAYER");
class Utils
     public final static String wav = "wav";
     public final static String aif = "aif";
     public final static String rmf = "rmf";
     public final static String au = "au";
     public final static String mid = "mid";
     * Get the extension of a file.
     public static String getExtension(File f)
          String ext = null;
          String s = f.getName();
          int i = s.lastIndexOf('.');
          if (i > 0 && i < s.length() - 1)
               ext = s.substring(i + 1).toLowerCase();
          return ext;
//Tim