Directory being added two times in JTable rows.(JTable Incorrect add. Rows)

Question

hi,
I have a problem, The scenario is that when I click any folder that is in my JTable's row, the table is update by removing all the rows and showing only the contents of my selected folder. If my selected folder contains sub-folders it is some how showing that sub-folder two time and if there are files too that are shown correctly. e.g. If I have a parent folder FG1 and inside that folder I have one more folder FG12 and two .java files then when I click on FG1 my table should show FG12 and two .java files in separate rows, right now it is showing me the contents of FG1 folder but some how FG12 is shown on two rows i.e. first row shows FG12 second row shows FG12 third row shows my .java file and fourth row shows my .java fil. FG12 should be shown only one time. The code is attached. The methods to look are upDateTabel(...) and clearTableData(....), after clearing all my rows then I proceed on adding my data to the Jtable and inserting rows. May be addRow(... method of DefaultTableModel is called two times if it is a directory I don't know why. Please see the code below what I am doing wrong and how to fix it. Any help is appreciated.
Thanks
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.table.*;
import javax.swing.border.*;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
public class SimpleTable extends JPanel {
     /** Formats the date */
     protected SimpleDateFormat           formatter;
/** two-dimensional array to hold the information for each column */
protected Object                     data[][];
/** variable to hold the date and time in a raw form for the directory*/
protected long                          dateDirectory;
/** holds the readable form converted date for the directories*/
protected String                     dirDate;
/** holds the readable form converted date for the files*/
protected String                     fileDate;
/** variable to hold the date and time in a raw form for the file*/
protected long                          dateFile;
/** holds the length of the file in bytes */
protected long                         totalLen;
/** convert the length to the wrapper class */
protected Long                         longe;
/** Vector to hold the sub directories */
protected Vector                     subDir;
/** holds the name of the selected directory */
protected String                    dirNameHold;
/** converting vector to an Array and store the values in this */
protected File                     directoryArray[];
/** hashtable to store the key-value pair */
protected static Hashtable hashTable = new Hashtable();
/** refer to the TableModel that is the default*/
protected DefaultTableModel      model;
/** stores the path of the selected file */
protected static String               fullPath;
/** stores the currently selected file */
protected static File selectedFilename;
/** stores the extension of the selected file */
protected static String           extension;
/** holds the names of the columns */
protected final String columnNames[] = {"Name", "Size", "Type", "Modified"};
     * Default constructor
     * @param File the list of files and directories to be shown in the JTable.
public SimpleTable(File directoryArray[])
          this.setLayout(new BorderLayout());
          this.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
          (SimpleTable.hashTable).clear();
          data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
          formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
          //this shows the data in the JTable i.e. the primary directory stuff.
          for(int k = 0; k < directoryArray.length; k++)
               if(directoryArray[k].isDirectory())
                    data[k][0] = directoryArray[k].getName();
                    data[k][2] = "File Folder";
                    dateDirectory = directoryArray[k].lastModified();
                    dirDate = formatter.format(new java.util.Date(dateDirectory));
                    data[k][3] = dirDate;
                    (SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);                    
               else if(directoryArray[k].isFile())
                    data[k][0] = directoryArray[k].getName();
                    totalLen = directoryArray[k].length();
                    longe = new Long(totalLen);
                    data[k][1] = longe + " Bytes";
                    dateFile = directoryArray[k].lastModified();
                    fileDate = formatter.format(new java.util.Date(dateFile));
                    data[k][3] = fileDate;
                    (SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
model = new DefaultTableModel();
model.addTableModelListener( new TableModelListener(){
          public void tableChanged( javax.swing.event.TableModelEvent e )
          final JTable table = new JTable(model);
          table.getTableHeader().setReorderingAllowed(false);
          table.setRowSelectionAllowed(false);
          table.setBorder( BorderFactory.createEmptyBorder( 0, 0, 0, 0 ) );
          table.setShowHorizontalLines(false);
          table.setShowVerticalLines(false);
          table.addMouseListener(new MouseAdapter()
public void mouseReleased(MouseEvent e)
//TBD:- needs to handle the doubleClick of the mouse.
System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
if(e.getClickCount() >= 2 &&
(table.getSelectedColumn() == 0) &&
((table.getColumnName(0)).equals(columnNames[0])))
     System.out.println("The clicked component is " + table.rowAtPoint(e.getPoint()) + "AND the number of clicks is " + e.getClickCount());
     upDateTable(table);
upDateTable(table);
          /** set the columns */
          for(int c = 0; c < columnNames.length; c++)
               model.addColumn(columnNames[c]);
          /** set the rows */
          for(int r = 0; r < data.length; r++)
               model.addRow(data[r]);
          //this sets the tool-tip on the headers.
          DefaultTableCellRenderer D_headerRenderer = (DefaultTableCellRenderer ) table.getTableHeader().getDefaultRenderer();
          table.getColumnModel().getColumn(0).setHeaderRenderer(D_headerRenderer );
          ((DefaultTableCellRenderer)D_headerRenderer).setToolTipText("File and Folder in the Current Folder");
//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);
//Add the scroll pane to this window.
this.add(scrollPane, BorderLayout.CENTER);
* Returns the number of columns
* @return int number of columns
public int getColumnTotal()
     return columnNames.length;
* Returns the number of rows
* @return int number of rows
public int getRowTotal(Object directoryArray[])
     return directoryArray.length;
* Update the table according to the selection made if a directory then searches and
* shows the contents of the directory, if a file fills the appropriate fields.
* @param JTable table we are working on
* //TBD: handling of the files.
private void upDateTable(JTable table)
if((table.getSelectedColumn() == 0) && ((table.getColumnName(0)).equals(columnNames[0])))
     dirNameHold =(String) table.getValueAt(table.getSelectedRow(),table.getSelectedColumn());
               File argument = findPath(dirNameHold);
               if(argument.isFile())
                    CMRDialog.fileNameTextField.setText(argument.getName());
                    try
                         fullPath = argument.getCanonicalPath();                          
                         selectedFilename = argument.getCanonicalFile();                          
CMRDialog.filtersComboBox.removeAllItems();
                         extension = fullPath.substring(fullPath.lastIndexOf('.'));
                         CMRDialog.filtersComboBox.addItem("( " + extension + " )" + " File");
                    catch(IOException e)
                         System.out.println("THE ERROR IS " + e);
                    return;
               else if(argument.isDirectory())
                    String path = argument.getName();
                         //find the system dependent file separator
                         //String fileSeparator = System.getProperty("file.separator");
                    CMRDialog.driveComboBox.addItem(" " + path);
          subDir = Search.subDirs(argument);
          /**TBD:- needs a method to convert the vector to an array and return the array */
          directoryArray = new File[subDir.size()];
               int indexCount = 0;
               /** TBD:- This is inefficient way of converting a vector to an array */               
               Iterator e = subDir.iterator();               
               while( e.hasNext() )
                    directoryArray[indexCount] = (File)e.next();
                    indexCount++;
          /** now calls this method and clears the previous data */
          clearTableData(table);     
               (SimpleTable.hashTable).clear();
               data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
               formatter = new SimpleDateFormat("mm/dd/yyyy hh:mm aaa");
               data = null;
               data = new Object[this.getRowTotal(directoryArray)][this.getColumnTotal()];
               for(int k = 0; k < directoryArray.length; k++)
                    if(directoryArray[k].isDirectory())
                         data[k][0] = directoryArray[k].getName();
                         data[k][2] = "File Folder";
                         dateDirectory = directoryArray[k].lastModified();
                         dirDate = formatter.format(new java.util.Date(dateDirectory));
                         data[k][3] = dirDate;
                         (SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);
                         model.addRow(data[k]);
                         model.fireTableDataChanged();
                    else if(directoryArray[k].isFile())
                         data[k][0] = directoryArray[k].getName();
                         totalLen = directoryArray[k].length();
                         longe = new Long(totalLen);
                         data[k][1] = longe + " Bytes";
                         dateFile = directoryArray[k].lastModified();
                         fileDate = formatter.format(new java.util.Date(dateFile));
                         data[k][3] = fileDate;
                         (SimpleTable.hashTable).put(directoryArray[k].getName(), directoryArray[k]);                    }
                         model.addRow(data[k]);
                         model.fireTableDataChanged();
          table.revalidate();
          table.validate();               
* Searches the Hashtable and returns the path of the folder or the value.
* @param String name of the directory or file.
* @return File     full-path of the selected file or directory.
public File findPath(String value)
     return (File)((SimpleTable.hashTable).get(value));
* This clears the previous data in the JTable and removes the rows.
* @param     JTable table we are updating.
public void clearTableData(JTable table)
     for(int row = table.getRowCount() - 1; row >= 0; --row)
               model.removeRow(row);
          model.fireTableStructureChanged();

Answer 1

java gurus any idea how ti fix this problem.
thanks