Object in JComboBox in JTable is not associated with same object in combo list

Question

my problem is that when I put Object to table in cell with CellEditor set to work as JComboBox and it's fine, but when click on the cell i got list with Objects, but selected one is not that which were in cell before, but just first on the list. Is there simple way to fix it?

public void setValueAt(Object value, int row, int col) {
    data.get(row).values.set(col, (Device) value);
    fireTableCellUpdated(row, col);
}

and

for(int i = 0; i < deviceTable.getModel().getColumnCount(); i++){

        ExtendedAbstractTableModel model = (ExtendedAbstractTableModel) deviceTable.getModel();

        JComboBox<Device> combo = new JComboBox<Device>();

        for(Device value : model.columnsCombo.get(i)){
            combo.addItem(value);
        }

        TableColumn columnModel = deviceTable.getColumnModel().getColumn(i);
        columnModel.setCellEditor(new DefaultCellEditor(combo));
}

Best if your code is a [minimal complete runnable example](http://stackoverflow.com/help/mcve). — Hovercraft Full Of Eels, Aug 04 '14 at 13:21
Please check out the link in my comment above. If your posted code complies with this standard, you will likely get better help, quicker. — Hovercraft Full Of Eels, Aug 04 '14 at 13:38
code posted in your question talking about nothing, question in this form isn't answerable here, again for better help sooner post an SSCCE/MCVE, short, runnable, compilable with hardcoded value for JTable/XxxTableModel stored in local variable — mKorbel, Aug 04 '14 at 13:41
Works with `DefaultCellEditor`, for [example](http://stackoverflow.com/a/7356518/230513). — trashgod, Aug 04 '14 at 14:22

score 1 · Answer 1 · edited May 23 '17 at 11:57

As shown in this example, DefaultCellEditor handles this for you. You're adding multiple instances in a loop; a single instance can handle the entire column. DefaultCellEditor works by overriding setValue() in the nested EditorDelegate. It's not clear how you've defeated this feature, but understanding the default may guide your search.

public void setValue(Object value) {
    comboBox.setSelectedItem(value);
}

Naix · Accepted Answer · 2014-08-05T13:40:35.347

0

Finally I found what was wrong. I didn't override equal method in my class, and that is why these components couldnt recognise same item. Anyway, thank you all.

edited Aug 05 '14 at 13:40

answered Aug 05 '14 at 13:12

Naix

17
6

Object in JComboBox in JTable is not associated with same object in combo list

2 Answers2