JTable Updating

hi ranches,

i developed a program to display the files in selected directories or folders using jtree and jtable..
i have a jdialog which gets the folder from the user..
i have no problem while choosing the folder for first time..
but when i again choose another folder the new files get append with the last displayed files...
i have tried lots of methods to refresh the jtable when the user selects the open dialog ..........

here is my code:
// this is for opening the jdialog:

//this s for showing the files list in jtable and jtree

private void ShowFilesMouseClicked(java.awt.event.MouseEvent evt) {                                       
    try
    {
        if (ChooseDir.getText().equals(" "))
        {
            JOptionPane.showMessageDialog(null, "Please Select a Folder", " No Folder Selected", JOptionPane.WARNING_MESSAGE);
        } 
        else
        {
            Open.setVisible(false);
            System.out.println("Directory:" + fnDirectory);
             root = new DefaultMutableTreeNode("root", true);
            getList(root, dir);
            System.out.println("Dir:"+dir.length());
            DefaultTreeModel treeModel = new DefaultTreeModel(root);
            jTree1.setModel(treeModel);
            if(jTree1.isVisible())
            {
//                DicomTableModel model = new DicomTableModel();
//                model.DicomTableModel1(dir);
//                jTable1.setModel(model);
                setUpEvents(dir);

}
            else
            {

}
        }
    }
    catch(Exception e)
    {
        System.out.println("Error:"+e.getMessage());
    }
    }

public void setUpEvents(File dir)
    {
        try
        {
                  DicomTableModel model = new DicomTableModel();
                    model.DicomTableModel1(dir);
                    jTable1.setModel(model);
        }
        catch(UnsupportedOperationException e)
        {
            System.out.println("Error:"+e.getMessage());
        }
    }

code for jtree

my own table model code

class DicomTableModel extends AbstractTableModel
   {
     protected String[] columnNames = new String[]{"name", "size", "last modified", "File Path", "readable?", "writable?"};
    protected Class[] columnClasses = new Class[]{String.class, Long.class, Date.class, String.class, Boolean.class, Boolean.class};

public void DicomTableModel1(File dir1)
        {
            a = countFiles(dir1);
            System.out.println("Total:"+a);
        }

public int getColumnCount() {
            return 4;
        }

public int getRowCount() {
            return a;
        }

@Override
        public String getColumnName(int col) {
            return columnNames[col];
        }

@Override
        public Class getColumnClass(int col) {
            return columnClasses[col];
        }

public Object getValueAt(int row, int col)
        {
            File f = new File(dirnames[row], fnames[row]);
          
            switch (col)
            {
                case 0:
                    return f.getName();
                case 1:
                    return new Long(f.length()) +"KB";
                case 2:
                    return new Date(f.lastModified());
                case 3:
                    return f.getAbsolutePath();
                case 4:
                    return f.canRead() ? Boolean.TRUE : Boolean.FALSE;
                case 5:
                    return f.canWrite() ? Boolean.TRUE : Boolean.FALSE;
                default:
                    return null;
            }
        }

@Override
        public void fireTableStructureChanged() {
            super.fireTableStructureChanged();
        }

@Override
        public void fireTableDataChanged() {
            super.fireTableDataChanged();
        }
       
   }

need help...
thanks

> need help...
> thanks

if you really want help, you'd post something we can copy/paste/compile/run and see what you see.

if you just want us to read your snippets, well, I'd prefer to go to the library

this time i will enter my entire data

private void OpenFileActionPerformed(java.awt.event.ActionEvent evt) {                                         
     try
     {
        if(OpenFile.getText().equals("Open")==true)
       {
            Open.setSize(400,150);
            Open.setLocation(500,400);
            Open.setVisible(true);
        }
     }
     catch(Exception e)
     {
         System.out.println("Error:"+e.getMessage());
     }
    }

private void ChooseDirMouseClicked(java.awt.event.MouseEvent evt) {

chooser=new JFileChooser();
        chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
        chooser.setCurrentDirectory(new File("/home/ambiga"));
        int retval=chooser.showOpenDialog(null);
        if(retval==JFileChooser.APPROVE_OPTION)
        {
            dir=chooser.getSelectedFile();
            fnDirectory=dir.toString();
            Directorytxt.setText(fnDirectory);
             }
    }

private void ShowFilesMouseClicked(java.awt.event.MouseEvent evt) {                                       
    try
    {
        if (ChooseDir.getText().equals(" "))
        {
            JOptionPane.showMessageDialog(null, "Please Select a Folder", " No Folder Selected", JOptionPane.WARNING_MESSAGE);
        } 
        else
        {
            Open.setVisible(false);
            System.out.println("Directory:" + fnDirectory);
            root = new DefaultMutableTreeNode("root", true);

getList(root, dir);
            System.out.println("Dir:" + dir.length());
            DefaultTreeModel treeModel = new DefaultTreeModel(root);
            jTree1.setModel(treeModel);
            DicomTableModel model = new DicomTableModel();
            model.DicomTableModel1(dir);
            jTable1.setModel(model);

}
    }
    catch(Exception e)
    {
        if(root.isRoot())
        {
        JOptionPane.showMessageDialog(null, "Warning! u have clicked the root node...."+evt.toString(), " Root Access", JOptionPane.WARNING_MESSAGE);
        }
    }
    }                                      
  
    private void jTree1ValueChanged(javax.swing.event.TreeSelectionEvent evt) {                                    
        jTable1.repaint();
            i = 0;
            p = 0;
            q = 0;
            r = 0;
            s = 0;
            dirsize = 0;
            p1 = 0;
            p2 = 0;
            p3 = 0;
            p4 = 0;
            p5 = 0;
            l255 = 0;
            l512 = 0;
            l1 = 0;
            b1 = 0;
            Object obj = (evt.getPath()).getLastPathComponent();
            String ss = obj.toString();
            File seldir = new File(ss);
            
            DicomTableModel model = new DicomTableModel();
                    model.DicomTableModel1(seldir);
                    jTable1.setModel(model);

}

private void ViewImgActionPerformed(java.awt.event.ActionEvent evt) {

// DicomImage.setSize(535,542);
        //DicomImage.pack();
        DicomImage.setSize(547, 568);
        DicomImage.setVisible(true);
        DicomImage.setLocation(500,300);
        DicomImageView();
    }

private void ExitActionPerformed(java.awt.event.ActionEvent evt) {

System.exit(0);      
    }

private void AboutActionPerformed(java.awt.event.ActionEvent evt) {                                      
        ImageIcon imageic=new ImageIcon("/home/sample/Desktop/Files/new/gif/heart.gif");
        aboutIcon.setIcon(imageic);
        Abt.setVisible(true);
        Abt.setLocation(500,300);
        Abt.pack();
    }

private void jTable1MouseReleased(java.awt.event.MouseEvent evt) {

System.out.println(evt.toString());
        jPopupMenu1.setPopupSize(220, 180);
        if (evt.getButton() == 3)
        {
            jPopupMenu1.show(jTable1, evt.getX(), evt.getY());
        }
        if(evt.isPopupTrigger())
        {
            
        }
    }

private void ViewActionPerformed(java.awt.event.ActionEvent evt) {                                     
        //jLabel1.setSize(515,632);
       // DicomImage.setSize(1010,645);
        //DicomImage.pack();
        DicomImage.setSize(547, 568);
        DicomImage.setVisible(true);
        DicomImage.setLocation(500, 300);
        DicomImageView();
        
    }

private void jLabel1MouseClicked(java.awt.event.MouseEvent evt) {

//statusbar.setText("X:"+evt.getX()+"Y:"+evt.getY());
    }

public void DicomImageView()
{
    imagefile = jTable1.getSelectedRows();
    for (int k = 0; k < imagefile.length; k++)
    {
        filename = (String) jTable1.getValueAt(imagefile[k], 3);
    }
    String[] img = ImageIO.getReaderMIMETypes();
    for (int j = 0; j < img.length; j++)
    {
        try
        {
            f= new File(filename);
            Iterator<ImageReader> it = ImageIO.getImageReadersByMIMEType(img[j]);
            ImageReader ir = (ImageReader) it.next();
            ImageInputStream in = ImageIO.createImageInputStream(f);
            ir.setInput(in, true);
            BufferedImage bi = ir.read(0);
            if (bi == null)
            {
                System.out.println(bi + "not found");
            }
            else
            {
                ImageIcon ic = new ImageIcon(bi);
                jLabel1.setIcon(ic);
                jLabel1.updateUI();
                break;
            }
        } 
        catch (Exception e)
        {
        }
    }
}

public void getList(DefaultMutableTreeNode node, File f)
    {
        try
        {
            if(f.isDirectory())
            {
                DefaultMutableTreeNode child = new DefaultMutableTreeNode(f);
                node.add(child);
                File fList[] = f.listFiles();
                
                for (int k = 0; k < fList.length; k++)
                {
                    getList(child, fList[k]);
                }
            }
            
         
        }
        catch(Exception e)
        {
            System.out.println("Error:"+e.getMessage());
        }
    }

public static int countFiles(File directory)
    {
        for (File file : directory.listFiles()) 
        {
            if (file.isFile()) 
            {
                
                    count++;
                    fnames[i] = file.getName();
                    dirnames[i] = file.getParent();
                    i++;
                
            } 
            else if (file.isDirectory()) 
            {
                count += countFiles(file);
            }
        }
        return i;
    }

public static void main(String args[])
    {
        new dicomCompression().setVisible(true);
    }

//    private void fireTableDataChanged()
//    {
//        throw new UnsupportedOperationException("Not yet implemented");
//    }
 class DicomTableModel extends AbstractTableModel
   {
     protected String[] columnNames = new String[]{"name", "size", "last modified", "File Path", "readable?", "writable?"};
    protected Class[] columnClasses = new Class[]{String.class, Long.class, Date.class, String.class, Boolean.class, Boolean.class};

public void DicomTableModel1(File dir1)
        {
            a = countFiles(dir1);
            System.out.println("Total:"+a);
        }

public int getColumnCount() {
            return 4;
        }

public int getRowCount() {
            return a;
        }

@Override
        public String getColumnName(int col) {
            return columnNames[col];
        }

@Override
        public Class getColumnClass(int col) {
            return columnClasses[col];
        }

public Object getValueAt(int row, int col)
        {
            File f = new File(dirnames[row], fnames[row]);
          
            switch (col)
            {
                case 0:
                    return f.getName();
                case 1:
                    return new Long(f.length()) +"KB";
                case 2:
                    return new Date(f.lastModified());
                case 3:
                    return f.getAbsolutePath();
                case 4:
                    return f.canRead() ? Boolean.TRUE : Boolean.FALSE;
                case 5:
                    return f.canWrite() ? Boolean.TRUE : Boolean.FALSE;
                default:
                    return null;
            }
        }

@Override
        public void fireTableStructureChanged() {
            super.fireTableStructureChanged();
        }

@Override
        public void fireTableDataChanged() {
            super.fireTableDataChanged();
        }
       
   }

problem am getting is when we choose new directory or folder, the files in selected folder get append with the jtable value ...

i have tried few methods to do it such as fireTableDataChanged etc. but nothing happened..
what i should do to refresh jtable every time while user chooses new folder/directory?...
thanks..

We don't want full code files, we want SSCCEs.

Ambika Nagalakshmi wrote:what i should do to refresh jtable every time while user chooses new folder/directory?

Create a new instance of your table model, put your data into it, and call the JTable's setModel method.