How to Retrieve JTable Data as an Array

Question

I\'ve populated a JTable through a DefaultTableModel with the (Object[][] data, String[] headers) constructor. Users can edit the table, and I want

Answer 1

I take that back, on 2nd thoughts, you dont need any typecasting - TableModel is an interface that has all the 3 method calls you need. :)

Summary: Get the model for the table, check its class and typecast it to appropriate class (Abstract or Default TableModel), and use its methods to load a newly created array. Some psuedoCode:

public Object[][] getTableData (JTable table) {
    DefaultTableModel dtm = (DefaultTableModel) table.getModel();
    int nRow = dtm.getRowCount(), nCol = dtm.getColumnCount();
    Object[][] tableData = new Object[nRow][nCol];
    for (int i = 0 ; i < nRow ; i++)
        for (int j = 0 ; j < nCol ; j++)
            tableData[i][j] = dtm.getValueAt(i,j);
    return tableData;
}

Your headers should not have changed by user-edits. Hope that helps. Regards, - M.S.