TableModel problem

[Peter Phung]

Hi guys and girls,
I'm trying to implement a table model but keep getting a runtime error. The stack trace i get is :
Exception occurred during event dispatching:
java.lang.AbstractMethodError
at archivetool.ResultSetTableModel.<init>(ResultSetTableModel.java:40)
at archivetool.resultsTable2.init(resultsTable2.java:78)
at archivetool.resultsTable2.<init>(resultsTable2.java:56)
at archivetool.db_queryTool.goDB(db_queryTool.java:614)
at archivetool.db_queryTool$6.actionPerformed(db_queryTool.java:386)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:216)
at java.awt.Component.processMouseEvent(Component.java:3715)
at java.awt.Component.processEvent(Component.java:3544)
at java.awt.Container.processEvent(Container.java:1164)
at java.awt.Component.dispatchEventImpl(Component.java:2593)
at java.awt.Container.dispatchEventImpl(Container.java:1213)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2216)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
at java.awt.Container.dispatchEventImpl(Container.java:1200)
at java.awt.Window.dispatchEventImpl(Window.java:926)
at java.awt.Component.dispatchEvent(Component.java:2497)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:131)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:98)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
and my code is

 public class ResultSetTableModel implements TableModel {
    ResultSet results;             
    ResultSetMetaData metadata;    
    int numcols, numrows;          
    static final public ColumnData m_columns[] = {
    new ColumnData("File Name", 80, JLabel.LEFT),
    new ColumnData("Drawing Size", 50, JLabel.LEFT),
    new ColumnData("CAD Format", 70, JLabel.LEFT),
    new ColumnData("Part Number", 100, JLabel.LEFT),
    new ColumnData("Revision", 50, JLabel.LEFT),
    new ColumnData("Project Number", 70, JLabel.LEFT),
    new ColumnData("Customer Name", 60, JLabel.LEFT),
    new ColumnData("Drawing Status", 50, JLabel.LEFT),
    new ColumnData("File Location", 100, JLabel.LEFT),
    new ColumnData("Designer Name", 100, JLabel.LEFT),
    new ColumnData("Archiving Time", 120, JLabel.LEFT),
    new ColumnData("Description", 100, JLabel.LEFT),
    new ColumnData("File Size", 35, JLabel.LEFT),
};
    ResultSetTableModel(ResultSet resultset) throws SQLException {
        results = resultset;                 
        metadata = results.getMetaData();       
        numcols = metadata.getColumnCount();    
        results.last();                         
        numrows = results.getRow();             
    }
    
    public void close() {
        try { results.getStatement().close(); }
        catch(SQLException e) {};
    }
    protected void finalize() { close(); }
    public int getColumnCount() { return numcols; }
    public int getRowCount() { return numrows; }
    public String getColumnName(int col) {
return m_columns[col].m_title;
    }
    public Class getColumnClass(int column) { return String.class; }
   
    public Object getValueAt(int row, int column) {
        try {
            results.absolute(row+1);                
            Object o = results.getObject(column+1); 
            if (o == null) return null;       
            else return o.toString();               
        } catch (SQLException e) { return e.toString(); }
    }
    public boolean isCellEditable(int row, int column) { return false; } 
    public void setValueAt(Object value, int row, int column) {}
    public void addTableModelListener(TableModelListener l) {}
    public void removeTableModelListener(TableModelListener l) {}
}
class ColumnData {
    public String m_title;
    public int m_width;
    public int m_alignment;
    public ColumnData(String title, int width, int alignment) {
m_title = title;
m_width = width;
m_alignment = alignment;
    }
} 

line 40 is :
results.last();
but commenting out this line just causes the eerror to appear on the next line.
Please can anyone help me

[Renee Zhang]

Hi Phung,
If you want to implement an interface, you have to implement all the methods in this interface. Try to extends DefaultTableModel instead of implemet tableModel...
Good Luck!
Renee

[Peter Phung]

I've tried to extend DefaultTableModel as suggested, but i'm still getting the same error when i run the program.
Has anyone got another suggestion?

[Rene Liebmann]

Hi,
if I look to your code, then I would suggest, that you simply add a Default Constructor to it, I mean a constructor without any argument, which calls super().
In your existing constructor, you should call this() in your first line. Maybe this helps.
Anyway, you should extend from DefaultTableModel. In the most cases, this fits your needs.
Bye
Rene

[Peter Phung]

I've tried using a default constructor but i still keep getting the same AbstractMethodError. I don't understand why i get this error.
Please can anyone help me?

[Rene Liebmann]

Hi,
I tried your example especially your table model and for me it worked. The only thing I did, was replacing the ResultSet by a Vector. Of course, this is not the solution for you, but it tells me, that you are searching your error in the wrong class. You should better have a look to your implementation of your ResultSet. Maybe there is a method missing.
In my opinion, your TableModel is correct. You can leave it as it is.
Here is my Vector table model

  
import javax.swing.table.*;
import javax.swing.*;
import java.util.*;
import java.sql.*;
import java.awt.event.*;
import javax.swing.event.*;
public class ResultSetTableModel extends DefaultTableModel {
Vector results;
ResultSetMetaData metadata;
int numcols, numrows;
static final public ColumnData m_columns[] = {
new ColumnData("File Name", 80, JLabel.LEFT),
new ColumnData("Drawing Size", 50, JLabel.LEFT),
new ColumnData("CAD Format", 70, JLabel.LEFT),
new ColumnData("Part Number", 100, JLabel.LEFT),
new ColumnData("Revision", 50, JLabel.LEFT),
new ColumnData("Project Number", 70, JLabel.LEFT),
new ColumnData("Customer Name", 60, JLabel.LEFT),
new ColumnData("Drawing Status", 50, JLabel.LEFT),
new ColumnData("File Location", 100, JLabel.LEFT),
new ColumnData("Designer Name", 100, JLabel.LEFT),
new ColumnData("Archiving Time", 120, JLabel.LEFT),
new ColumnData("Description", 100, JLabel.LEFT),
new ColumnData("File Size", 35, JLabel.LEFT),};
public ResultSetTableModel(){
  super();
  Vector res = new Vector(10);
  for (int i = 0; i < 10; i++) {
    res.add(String.valueOf(i));
  }
  setContent(res);
}
public void setContent(Vector resultset){
results = resultset;
//metadata = results.getMetaData();
numcols = 13;
numrows = results.size();
//numrows = results.getRow();
}

public int getColumnCount()
{ return numcols;
}
public int getRowCount()
{ return numrows;
}
public String getColumnName(int col)
{
return m_columns[col].m_title;
}
public Class getColumnClass(int column)
{ return String.class;
}
public Object getValueAt(int row, int column)
{
try {
  return results.elementAt(row).toString();
}
catch (Exception e) { return e.toString(); }
}
public boolean isCellEditable(int row, int column)
{ return false;
}
public void setValueAt(Object value, int row, int column)
{}
public void addTableModelListener(TableModelListener l) {}
public void removeTableModelListener(TableModelListener l) {}
}
class ColumnData {
public String m_title;
public int m_width;
public int m_alignment;
public ColumnData(String title, int width, int alignment) {
m_title = title;
m_width = width;
m_alignment = alignment;
}
}

Please have in mind, that this is simply a hack. It is not well coded. At least the vector is a bad example, but it does it's work. The table will contain values. And that's what I want.
Hope this helps you a bit.
Rene

[Renee Zhang]

I have some doubt about JDBC+ JTable... How do we populate a table when table data comes from a database?
What I am doing now is to seperate JDBC from JTable.
Step 1: Use JDBC to get a data Vector and a column Vector and close connection after that. The structure of the data Vector is up to you, I have a tableData Object which matches a table in the database if the table is editable, or it's a Vector of Vecotr if the table is read only.
Step 2: Pass 2 Vector to my tableModel which is extends AbstractorTableModel.
Step 3: After users make some changes. Save the vector in my tableModel into database.
By following these steps, it's easy to debug and doesn't open the connection all the time. I am wondering if I am doing right or anyone has good ideas about how to do JDBC + JTable right. Thanks in advance.
Renee

[Peter Phung]

Well the stack trace does point to a line where i try to manipulate the result set, but i'm unsure of what to do next.
Could the problem be that the resultset is parsed to the ResultSetTableModel class?
Or can you suggest something else?

[Rene Liebmann]

Sounds not bad to separate JDBC and JTable. I would do the same.
But maybe it will not solve the problem, because when you create your data structure (may it be a vector of vectors) then you have to use the same method, which crashs (ResultSet.last()).

[Renee Zhang]

If you want to call ResultSet.last() and manipulate the resultSet, then when you create the statement, you have to call Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE); You may try to see if your JDBC version support update-resultset function by the return value of yourResultSet.getConcurrency(). if it returns 1007, that means the resultset is ResultSet.CONCUR_READ_ONLY. if it returns 1008, it means ResultSet.CONCUR_UPDATABLE.
There are lots of examples in the book "JDBC API Tutorial and Reference, Second Edition"... Also there is a book call "JAVA Database" has lots of similar examples too.
Good Luck!
Renee

[Peter Phung]

I changed the declaration of the resultset to :
Stmt = C.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);
but i now get the AbstractMethodError on that line. Here is some of the code :

 public void init(String params) {

if (loadDriver()) {
    if(!getConnection()) 
System.out.println("\n*** Error ***\nConnection Error!");
}else{
    System.out.println("\n*** Error ***\n Driver load error!");
}
String query = queryBuild(params);
try {
    Stmt = C.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);//AbstractMethodError on line
    //Stmt = C.createStatement();
    RS = Stmt.executeQuery(query);
    t_data = new ResultSetTableModel(RS);
}
catch (SQLException Ex) {
    System.out.println("\nSQLException: " + Ex.getMessage());
        System.out.println("\nSQLState:     " + Ex.getSQLState());
        System.out.println("\nVendorError:  " + Ex.getErrorCode());
}
printResult = new JButton("Print Table");
resLayout = new GridBagLayout();
resConstraints = new GridBagConstraints();
resConstraints.fill = GridBagConstraints.HORIZONTAL;
resConstraints.anchor = GridBagConstraints.CENTER;
resPanel.setLayout(resLayout);
resPanel.setForeground(maroon);
resPanel.setBackground(Color.white);
  resTable = new JTable();
    resTable.setForeground(maroon);
    resTable.setBackground(Color.white);
resTable.setModel(t_data);
for (int k = 0; k < ResultSetTableModel.m_columns.length; k++) {
    TableColumn column = resTable.getColumnModel().getColumn(k);
    column.setPreferredWidth(ResultSetTableModel.m_columns[k].m_width);
    column.setMinWidth(ResultSetTableModel.m_columns[k].m_width);
}

sp = new JScrollPane(resTable);
resTable.setPreferredScrollableViewportSize(new Dimension(300,200));
resConstraints.gridx = 0;
resConstraints.gridy = 1;
resConstraints.gridheight = 1;
resConstraints.gridwidth = 5;
resLayout.setConstraints(sp, resConstraints);
resPanel.add(sp);
 

Also when i try to add the line
yourResultSet.getConcurrency();
The AbstractMethodError appears on that line.
This is very confusing

[Renee Zhang]

What kind of Driver are you using? Maybe you can post it to the JDBC forum since it's like a JDBC question...

Good Luck.
Renee

[Peter Phung]

I've actually taken a different approach to the problem now, But i'm having trouble getting my table to appear in a scrollpane with scrollbars. The table, appears in the scrollpane, but no horizontal scrollbars appear when the table is obviously larger than the viewable area.
Please could someone take a look at my code and tell me why?

 
public class resultsTable3 extends JDialog {
    JLabel messages;
    JPanel resPanel;
    JTable resTable;
    JScrollPane sp;
    JButton okResult, emailResult, printResult;
    JTextArea tf;
    GridBagLayout resLayout;
    GridBagConstraints resConstraints;
    Color maroon = new Color(102,0,0);
    ResultTableData t_data;
    boolean queried = false;
    protected Vector resVector = new Vector();
    Statement Stmt;
    Connection C;
    ResultSet RS;
    protected JTextArea tf1;
    protected String query;
    public resultsTable3(Frame frame, String title, boolean modal, String params) {
super(frame, title, modal);
try {
    init(params);
    pack();
}
catch (Exception ex) {
    ex.printStackTrace();
}
    }
    public void init(String params) {
String query = queryBuild(params);
queryDB(query);
resPanel = new JPanel();
okResult = new JButton("Ok");
emailResult = new JButton("Email results");
printResult = new JButton("Print Table");
resLayout = new GridBagLayout();
resConstraints = new GridBagConstraints();
messages = new JLabel("Results");
resConstraints.fill = GridBagConstraints.HORIZONTAL;
resConstraints.anchor = GridBagConstraints.CENTER;
resPanel.setLayout(resLayout);
resPanel.setForeground(maroon);
resPanel.setBackground(Color.white);
  resTable = new JTable();
    resTable.setForeground(maroon);
    resTable.setBackground(Color.white);
resTable.setModel(t_data);
int colWidth = 0;
for (int k = 0; k < ResultSetTableModel.m_columns.length; k++) {
    TableColumn column = resTable.getColumnModel().getColumn(k);
    column.setPreferredWidth(ResultSetTableModel.m_columns[k].m_width);
    column.setMinWidth(ResultSetTableModel.m_columns[k].m_width);
    colWidth = colWidth+ResultSetTableModel.m_columns[k].m_width;
}

resTable.setPreferredScrollableViewportSize(new Dimension(colWidth-50,200));
sp = new JScrollPane(resTable);
resConstraints.gridx = 0;
resConstraints.gridy = 1;
resConstraints.gridheight = 1;
resConstraints.gridwidth = 5;
resLayout.setConstraints(sp, resConstraints);
resPanel.add(sp);
//constraints omitted
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = this.getSize();
if (frameSize.height > screenSize.height)
    frameSize.height = screenSize.height;
if (frameSize.width > screenSize.width)
    frameSize.width = screenSize.width;
this.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);
show();
    }
    
    public void emaiOps() {
//do something
    }
    protected boolean getConnection() {
try {
    C = DriverManager.getConnection(
"jdbc:mysql://HOST  :-P	  ORT/DBNAME?user=USER&password=PASSWORD");
}
        catch (SQLException E) {
            System.out.println("\nSQLException: " + E.getMessage());
            System.out.println("\nSQLState:     " + E.getSQLState());
            System.out.println("\nVendorError:  " + E.getErrorCode());
    return false;
}
return true;
   }
    protected boolean loadDriver() {
try {
    Class.forName("org.gjt.mm.mysql.Driver").newInstance();
} catch (Exception E) {
    System.out.println("\nUnable to load driver.");
    return false;
}
return true;
    }
    public String queryBuild(String params) {
tf1 = new JTextArea();
params = params.replace('*', '%');
StringTokenizer eaParam = new StringTokenizer(params, "@");
int noRecs = eaParam.countTokens();
String condArr[] = new String[noRecs];
int i = 0;
while (eaParam.hasMoreTokens()) {
    condArr[i] = eaParam.nextToken();
    i++;
}
String optionsArray[] = new String[noRecs];
String tableArray[] = new String[noRecs];
String joinConditionsArray[] = new String[noRecs];
String booleanLogicArray[] = new String[noRecs];
String conditionsArray[] = new String[noRecs];
int k = 0;
while (k<noRecs) {
    StringTokenizer indiParam = new StringTokenizer(condArr[k], "+");
    int countParam = indiParam.countTokens();
    String indivParam[] = new String[countParam];
    int l = 0;
    while (indiParam.hasMoreTokens()) {
indivParam[l] = indiParam.nextToken();
l++;
    }
    int lastEntry = countParam-1;
    int equals1 = countParam-3;
    int equals2 = countParam-4;
    int cond1 = countParam-2;
    int cond2 = countParam-3;
    
    if ((indivParam[0].equals("Drawing")) || (indivParam[1].equals("Name"))) {
optionsArray[k] = "Part.Name";
tableArray[k] = "Part";
joinConditionsArray[k] = "Part.ID = File.PartID";
    }else if (indivParam[0].equals("Format")) {
optionsArray[k] = "CADFormat.Format";
tableArray[k] = "CADFormat";
joinConditionsArray[k] = "CADFormatID=CADFormat.ID";
    }else if (indivParam[0].equals("Customer")) {
optionsArray[k] = "Customer.Name";
tableArray[k] = "Customer";
joinConditionsArray[k] = "Customer.ID=Projects.CustomerID AND Projects.ID=File.ProjectsID";
    }else if (indivParam[0].equals("Project")) {
optionsArray[k] = "Projects.PDP";
tableArray[k] = "Projects";
joinConditionsArray[k] = "Projects.ID=File.ProjectsID";
    }else if (indivParam[0].equals("Status")) {
optionsArray[k] = "DrawingStatus.Status";
tableArray[k] = "DrawingStatus";
joinConditionsArray[k] = "File.DrawingStatusID=DrawingStatus.ID";
    }else if (indivParam[0].equals("Designer")) {
optionsArray[k] = "Designer.Name";
tableArray[k] = "Designer";
joinConditionsArray[k] = "Designer.ID=File.DesignerID";//joins to locatkion table also
    }else if (indivParam[0].equals("Archiving")) {
optionsArray[k] = "File.ArchivingTime";
tableArray[k] = "File";
joinConditionsArray[k] = " ";//no condition
    }else if (indivParam[0].equals("File")) {
optionsArray[k] = "Locations.Name";
tableArray[k] = "Location";
joinConditionsArray[k] = "File.LocationsID = Locations.ID";
    }
    if ((indivParam[lastEntry].equals("AND"))||(indivParam[lastEntry].equals("OR"))) {
booleanLogicArray[k] = indivParam[lastEntry];
    } else {
booleanLogicArray[k] = "NONE";
    }
    if (indivParam[equals1].equals("=")) {
conditionsArray[k] = indivParam[cond1];
    }else if (indivParam[equals2].equals("=")) {
conditionsArray[k] = indivParam[cond2]+" "+indivParam[cond1];
    }
    k++;
}
tf1.setText("SELECT File.Name, DrawingSize.Size, CADFormat.Format, Part.Name, Revision.Revision, Projects.PDP, Customer.Name,
 DrawingStatus.Status, Locations.Name, Designer.Name, File.ArchivingTime, File.Description, File.Filesize FROM Part,
 CADFormat, Customer, Projects, DrawingStatus, Designer, File, Locations, DrawingSize, Revision WHERE ((");
z = 0;
m = optionsArray.length;
while (z<m) {
    tf1.append("("+optionsArray[z]+" LIKE '"+conditionsArray[z]+"')");
    if (!booleanLogicArray[z].equals("NONE")) {
tf.append(" "+booleanLogicArray[z]+" ");
    }
    z++;
}
tf1.append(") AND (File.DrawingSizeID=DrawingSize.ID AND File.CADFormatID=CADFormat.ID AND File.PartID=Part.ID AND
 Part.RevisionID=Revision.ID AND File.ProjectsID=Projects.ID AND Projects.CustomerID=Customer.ID AND
 File.DrawingStatusID=DrawingStatus.ID AND File.LocationsID=Locations.ID AND File.DesignerID=Designer.ID)) ORDER BY Part.Name
 ASC");// AND Designer.Location=Locations.ID
query = tf1.getText();
System.out.println(query);
return query;
    }
    public void queryDB(String query) {
try {
    if (loadDriver()) {
if(!getConnection()) 
    System.out.println("\n*** Error ***\nConnection Error!");
    }else{
System.out.println("\n*** Error ***\n Driver load error!");
    }
    Stmt = C.createStatement();
    RS = Stmt.executeQuery(query);
    boolean queried = false;
    boolean hasData = false;
    while (RS.next()) {
if (!hasData) {
    resVector.removeAllElements();
    hasData = true;
}
String fileName = RS.getString(1);
String drawingSize = RS.getString(2);
String format = RS.getString(3);
String drawingName = RS.getString(4);
String revision = RS.getString(5);
String projectNumber = RS.getString(6);
String customerName = RS.getString(7);
String drawingStatus = RS.getString(8);
String fileLocation = RS.getString(9);
String designerName = RS.getString(10);
String archivingTime = RS.getString(11);
String description = RS.getString(12);
int fileSize = RS.getInt(13);
resVector.addElement(new TableData(fileName, drawingSize, format,
 drawingName, revision, projectNumber, customerName, drawingStatus, fileLocation,
 designerName, archivingTime, description, fileSize));
    }
    System.out.println("res vector = "+resVector.size());
    t_data = new ResultTableData(resVector);
    System.out.println("res vector2 = "+resVector.size());
    RS.close();
    Stmt.close();
    C.close();
    queried = true;
}
catch (SQLException E) {
    E.printStackTrace();
      System.out.println("\nSQLException: " + E.getMessage());
      System.out.println("\nSQLState:     " + E.getSQLState());
      System.out.println("\nVendorError:  " + E.getErrorCode());
    queried =  false;
}
    }
}
class TableData {
    public String m_fileName;
    public String m_drawingSize;
    public String m_format;
    public String m_drawingName;
    public String m_revision;
    public String m_projectNumber;
    public String m_customerName;
    public String m_drawingStatus;
    public String m_fileLocation;
    public String m_designerName;
    public String m_archivingTime;
    public String m_description;
    public int m_fileSize;
    public TableData (String fileName, String drawingSize, String format, String drawingName,
 String revision, String projectNumber, String customerName, String drawingStatus, String fileLocation, String designerName, String
 archivingTime, String description, int fileSize) {
m_fileName = fileName;
m_drawingSize = drawingSize;
m_format = format;
m_drawingName = drawingName;
m_revision = revision;
m_projectNumber = projectNumber;
m_customerName = customerName;
m_drawingStatus = drawingStatus;
m_fileLocation = fileLocation;
m_designerName = designerName;
m_archivingTime = archivingTime;
m_description = description;
m_fileSize = fileSize;
    }
}
class ResultTableData extends AbstractTableModel {
    protected Vector resVector = new Vector();
    static final public ColumnData m_columns[] = {
    new ColumnData("File Name", 80, JLabel.LEFT),
    new ColumnData("Drawing Size", 50, JLabel.LEFT),
    new ColumnData("CAD Format", 70, JLabel.LEFT),
    new ColumnData("Part Number", 100, JLabel.LEFT),
    new ColumnData("Revision", 50, JLabel.LEFT),
    new ColumnData("Project Number", 70, JLabel.LEFT),
    new ColumnData("Customer Name", 60, JLabel.LEFT),
    new ColumnData("Drawing Status", 50, JLabel.LEFT),
    new ColumnData("File Location", 100, JLabel.LEFT),
    new ColumnData("Designer Name", 100, JLabel.LEFT),
    new ColumnData("Archiving Time", 120, JLabel.LEFT),
    new ColumnData("Description", 100, JLabel.LEFT),
    new ColumnData("File Size", 35, JLabel.LEFT),
};
    public ResultTableData(Vector res) {
resVector = res;
System.out.println(resVector.size());
    }
    public boolean isCellEditable(int nRow, int nCol) {
return false;
    }
    public int getRowCount() {
return resVector==null ? 0 : resVector.size();
    }
    public int getColumnCount() {
return m_columns.length;
    }
    public Object getValueAt(int nRow, int nCol) {
if (nRow < 0 || nRow >= getRowCount())
    return "";
TableData row = (TableData)resVector.elementAt(nRow);
switch (nCol) {
    case 0: return row.m_fileName;
    case 1: return row.m_drawingSize;
    case 2: return row.m_format;
    case 3: return row.m_drawingName;
    case 4: return row.m_revision;
    case 5: return row.m_projectNumber;
    case 6: return row.m_customerName;
    case 7: return row.m_drawingStatus;
    case 8: return row.m_fileLocation;
    case 9: return row.m_designerName;
    case 10: return row.m_archivingTime;
    case 11: return row.m_description;
    case 12: return new Integer(row.m_fileSize);
}
return "";
    }
    public String getColumnName(int col) {
return m_columns[col].m_title;
    }
}
class ColumnData {
    public String m_title;
    public int m_width;
    public int m_alignment;
    public ColumnData(String title, int width, int alignment) {
m_title = title;
m_width = width;
m_alignment = alignment;
    }
}
 

I know it's a lot of code, but i would be grateful for any help
[ May 16, 2002: Message edited by: Peter Phung ]

[Rene Liebmann]

Please add the following line to your code:
resTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
At least for me it worked.

[Peter Phung]

Thanks Rene for the suggestion.
My application now works perfectly.
Thanks also to everyone else who made suggestions