Question

I want to extend the DefaultTableModel and change its dataVector.
I want to make the dataVector to show only specific fields of DataHolder in the column:

 public class MyTableModel extends DefaultTableModel {

    /**
     * The data vector
     */
    private Vector<DataHolder>   dataVector_;

    //overridden method to add row in the table model
    public void addRow(DataHolder rowData) {
        insertRow(getRowCount(), rowData);
    }

    public void insertRow(int row, DataHolder rowData) {
            dataVector_.insertElementAt(rowData, row);
            fireTableRowsInserted(row, row);
        }

    ...} //end of MyTableModel



   class DataHolder{
     private int age;
     private int year;
     private int month;
     private int day;
    }

How can i display specific DataHolder fields in my jtable? My table has 3 columns for month, day, and year.

Answer 1

You have to override the getValueAt(...) method:

@Override
public Object getValueAt(int row, int column) {
    DataHolder data = dataVector_.get(row);
    switch(column) {
        case 0: return data.month;
        case 1: return data.day;
        case 2: return data.year;
        default: return null;
    }