Problems with dynamic table

Question

When i run the following code I get these exceptions. the exceptions appear when i enter something in the table. And i can't find out wat i'm doing wrong!!Could you please help me out with this problem.
code:
MyTableModel myModel = new MyTableModel();
JTable table = new JTable(myModel);
JScrollPane scrollPane = new JScrollPane(table);
this.getContentPane().add(scrollPane, new XYConstraints(22, 130, 580, 198));
//opmaak van de kolommen optie en commentaar
setUpOptieColumn(table.getColumnModel().getColumn(0));
setUpCommentaarColumn(table.getColumnModel().getColumn(1));
publiic void setUpOptieColumn(TableColumn optieColumn) {...}
public void setUpCommentaarColumn(TableColumn commentaarColumn) {...}
public void setValueAt(String value, int row, int column)
System.out.println("value: " + value);
System.out.println("Row: "+ row);
System.out.println("column: "+ column);
if (column == 0)
System.out.println("value: " + value);
System.out.println("Row: "+ row);
System.out.println("column: "+ column);
code = value;
myModel.data.add(row,new tabelgegevens (code,"",false));
if (column == 1)
System.out.println("value: " + value);
System.out.println("Row: "+ row);
System.out.println("column: "+ column);
myModel.data.add(row,new tabelgegevens (code,value,false) );
table.tableChanged(new javax.swing.event.TableModelEvent(myModel));
- MyTableModel -
class MyTableModel extends DefaultTableModel
protected static int NUM_COLUMNS = 3;
protected static int START_NUM_ROWS = 1;
protected int nextEmptyRow = 0;
public int numRows = 1;
static final public String code = "Code";
static final public String omschrijving = "Omschrijving";
static final public String wissen = "Wissen";
public Vector data = null;
/*final String[] columnNames = {"Code",
"Omschrijving","Wissen","test"};*/
/*Object[][] data = {{" "," ",new Boolean(false)," "}};*/
public MyTableModel()
data = new Vector(0,1);
data.addElement(new tabelgegevens ("","",false));
public int getColumnCount() {
return NUM_COLUMNS;
public int getRowCount() {
return numRows;
public String getColumnName(int column) {
switch (column)
case 0:
return code;
case 1:
return omschrijving;
case 2:
return wissen;
return "";
public Object getValueAt(int row, int column)
try{
tabelgegevens tg = (tabelgegevens) data.elementAt(row);
switch (column)
case 0:
return (Object)tg.code;
case 1:
return (Object)tg.omschrijving;
case 2:
if (tg.wissen)
return (Object)"true";
else
return (Object)"false";
}catch (Exception e)
return "";
public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
public boolean isCellEditable(int row, int col)
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col > 2) {
return false;
} else {
return true;
exceptions:
Exception occurred during event dispatching:
java.lang.ArrayIndexOutOfBoundsException: 0 >= 0
     at java.util.Vector.elementAt(Vector.java:417)
     at javax.swing.table.DefaultTableModel.setValueAt(DefaultTableModel.java:674)
     at javax.swing.JTable.setValueAt(JTable.java:1737)
     at javax.swing.JTable.editingStopped(JTable.java:2992)
     at javax.swing.AbstractCellEditor.fireEditingStopped(AbstractCellEditor.java:112)
     at javax.swing.DefaultCellEditor$EditorDelegate.stopCellEditing(DefaultCellEditor.java:242)
     at javax.swing.DefaultCellEditor.stopCellEditing(DefaultCellEditor.java:176)
     at javax.swing.DefaultCellEditor$EditorDelegate.actionPerformed(DefaultCellEditor.java:251)
     at javax.swing.JComboBox.fireActionEvent(JComboBox.java:870)
     at javax.swing.JComboBox.selectedItemChanged(JComboBox.java:894)
     at javax.swing.JComboBox.contentsChanged(JComboBox.java:950)
     at javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:79)
     at javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:86)
     at javax.swing.JComboBox.setSelectedItem(JComboBox.java:415)
     at javax.swing.JComboBox.setSelectedIndex(JComboBox.java:455)
     at javax.swing.plaf.basic.BasicComboPopup$ListMouseHandler.mouseReleased(BasicComboPopup.java:582)
     at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:231)
     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:914)
     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)
thx
lanfeust79

Answer 1

I agree that creating a vector with size 0 isn't very useful. I've changed it, but i'm still getting the same exception.
I think the problem is in the 'getValueAt' method, although i can't figure out where it is.
I'm sorry i'm such a pain in the ass but i appriciate a lot your help.