Adding a Row to Table, ComboBox as a TableCellRenderer Problem !!

Question

Hell All:
I have a JTable with one of the Cell as ComboBox. Initially I draw the JTable with Three Rows and the
the ComboBox in the Second Column works fine. I see each comboBox has different Items. The ComboBox also has a Renderer (as I am customizing the Item's Text )
Here is the snippet from my Code.
==========================
// UIEditSubAllocation.ALT_ACCOUNT = 2;
// Get the Viewindex.... to get the correct column
int viewIndex = this.m_suballocTable.convertColumnIndexToView(UIEditSubAllocation.ALT_ACCOUNT);
// get the Table Column...
TableColumn altActColumn = this.m_suballocTable.getColumnModel().getColumn(UIEditSubAllocation.ALT_ACCOUNT);
// Create Three ComboBox..
JComboBox[] altActCell = new JComboBox[3];
for (int i =0;i< 3;++i) // adding Three Rows of Table Data...
String [] alternateAccounts = new String[4];
for(int j = 0; j < alternateAccounts.length; j++) // Each Alternate Accounts i.e combobox has 4 items..
alternateAccounts[0] = "Tom";
alternateAccounts[0] = "Vic";
alternateAccounts[0] = "Tracy";
alternateAccounts[0] = "Andy";
altActCell[i] = new AltAccountComboBox(alternateAccounts,this.m_suballocTable);
} // End of adding Three Rows
altActColumn.setCellRenderer(new AltAccountTableCellRenderer());
if (viewIndex >= 0)
ComboBoxEditor altActCellEditor = new ComboBoxEditor(altActCell);
altActColumn.setCellEditor(altActCellEditor);
The CombBoxEditor code is...
ublic class ComboBoxEditor extends DefaultCellEditor
* Constructs a ComboBoxEditor that uses an array of items of type object.
* @param items - an array of items of type object
public JComboBox[] m_comboBox;
public ComboBoxEditor(JComboBox[] box)
super(box[0]);
m_comboBox = box;
for(int i = 0; i < box.length; i++)
m_comboBox.setEditable(false);
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column)
if(row >= this.m_comboBox.length)
return super.getTableCellEditorComponent(table, value, isSelected, row, column);
return m_comboBox[row];
But when I click a Button (in a Panel) which adds a Row (with No values for the ComboBox ).. to the Jtable .. The Row Gets added fine.. but the JComboBox comes with Values from the First Row's ComboBox. I Don't want any Values in the JComboBox for the new added Row. Can someone tell me
how do I remove the Items from the ComboBox.
I will really appreciate for any help...
Thanks
-Pankaj

Answer 1

Hi ,
as per my opinion one approach would be that ,
you create a custom table region same as standard one using Jdeveloper and create other required fields also using jeveloper ,and then put this region in extend property of existing standard table region .
thanks
Pratap