CODEWITHSUNDEEP
javaswingjtabledouble-click
Viktor
Viktor

Reputation: 111

How to delete row by double-clicking?

I'm new to java, so my knowledge is quite limited. I already want to excuse now, if I have overlooked some rather obvious solution.

I'm having a problem trying to make a function in my program, so that the user can delete a row (from a JTable) by double-clicking on it. I've tried to use this code:

public void mouseClicked(MouseEvent e) {
     if (e.getClickCount() == 2) {
        JTable target = (JTable)e.getSource();
        int deletedRow = target.getSelectedRow();
            myTableModel.removeRow(deletedRow);

            myTableModel.fireTableDataChanged();
        } 
     }

myTableModel extends from AbstractTableModel. I hope some of you are able to help me.

Upvotes: 3

Views: 1961

Answers (2)

sathya
sathya

Reputation: 1424

 int c = evt.getClickCount();
    if (c == 2) {
        int res = JOptionPane.showConfirmDialog(null, "Are you sure to delete this data?", "", JOptionPane.YES_NO_OPTION);
        switch (res) {
            case JOptionPane.YES_OPTION:
            int p = table.getSelectedRow();
            DefaultTableModel model = (DefaultTableModel) table.getModel();
            model.removeRow(p);
            JOptionPane.showMessageDialog(null, "Delete Successfully");
            break;
            case JOptionPane.NO_OPTION:
            JOptionPane.showMessageDialog(null, "Delete Action is Canceled");
            break;
        }

    }

Upvotes: 1

camickr
camickr

Reputation: 324118

myTableModel extends from AbstractTableModel.

I don't know what that means. I assume it means you are using the DefaultTableModel, because that implements the removeRow(...) method.

There is no need to invoke the fireTableDateChanged() method. The removeRow() method of the DefaultTableModel will do that for you. It is the responsibility of the TableModel to invoke these methods, not your custom code.

Is you method being executed? By default a double click with invoke the editor of the cell you double clicked on. So you need to override the isCellEditable(...) method of your table to return false. Then a double click will be invoked on the table and your listener code should be invoked.

Also in your event code you access the table, so you should get the model from the table to make sure you are accessing the proper model:

DefaultTableModel model = (DefaultTableModel)table.getModel();

If you need more help (and in the future when you post a question) then post your SSCCE because we can't guess what you are doing based on a couple of lines of code.

Upvotes: 2

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