Help w/ combobox column...I'm stumped

Question

Hi, I've been struggling w/ this for weeks and can't get the answer. I've created a JTable that uses the JComboBox TableCellEditor (included below) and a TableModel. I can't seem to make the connection between the two. The columns load correctly and do allow me to change the selected item. But nothing I do seems to fire the tablemodel.setValueAt() method that I rely on to communicate w/ my other objects/database/etc. Could someone show me how to do this. I'm desperate, and have no more guesses.
private class DefectEditor extends JComboBox implements TableCellEditor {
public Component getTableCellEditorComponent(JTable jt, Object value, boolean isSelected, int row, int column) {
try {     
String compid = (String)jt.getModel().getValueAt(row, 0);
compid = compid.substring(0,compid.indexOf(" "));
DefectModel dm = new DefectModel(getDefectList(compid));
this.setModel(dm);
} catch (Exception e) {
e.printStackTrace();
return this;
public Object getCellEditorValue() {
return this.getSelectedItem();
public boolean isCellEditable(EventObject eo) {
return true;
public void addCellEditorListener(CellEditorListener l) {
public void cancelCellEditing() {
public boolean stopCellEditing() {
return true;
public boolean shouldSelectCell(EventObject eo) {
return true;
public void removeCellEditorListener(CellEditorListener l) {

Answer 1

Hi, I've been struggling w/ this for weeks and can't
get the answer. I've created a JTable that uses the
JComboBox TableCellEditor (included below) and a
TableModel. I can't seem to make the connection
between the two. The columns load correctly and do
allow me to change the selected item. But nothing I do
seems to fire the tablemodel.setValueAt() method that
I rely on to communicate w/ my other
objects/database/etc. Could someone show me how to do
this. I'm desperate, and have no more guesses.
private class DefectEditor extends JComboBox
implements TableCellEditor {
public Component getTableCellEditorComponent(JTable
jt, Object value, boolean isSelected, int row, int
column) {
try {     
String compid = (String)jt.getModel().getValueAt(row,
0);
compid = compid.substring(0,compid.indexOf(" "));
DefectModel dm = new
DefectModel(getDefectList(compid));
this.setModel(dm);
} catch (Exception e) {
e.printStackTrace();
return this;
public Object getCellEditorValue() {
return this.getSelectedItem();
public boolean isCellEditable(EventObject eo) {
return true;
public void addCellEditorListener(CellEditorListener
l) {
public void cancelCellEditing() {
public boolean stopCellEditing() {
return true;
public boolean shouldSelectCell(EventObject eo) {
return true;
public void
removeCellEditorListener(CellEditorListener l) {
}Not exaclty sure about the approach you have in your code, but the way I did it was to subclass a JTable and override the getEditor method.
public class MyTable
extends JTable {
private JComboBox myComboBox;
public MyTable(TableModel m) {
super(m);
String[] ar = {
"item 1",
"item 2",
"item 3",
"item 4",
"item 5"};
myComboBox = new JComboBox(ar);
public TableCellEditor getCellEditor(int row, int column) {
if (column == 1) //or whichever column
return new DefaultCellEditor(myComboBox);
return null;
...this works fine for me. It updates the underlying table model. Let me know if you still have problems.