How to sort rows based on a column added dynamically in jtable?

Question

There already exist a jtable, and I need to add a column dynamically, then set table cell renderer for that column, the cell renderer is jlabel with icon. I already finished that.

My question is : Right now I need to sort that column based on different icons used in table cell renderer, so how to do that? Thank you.

There are the related code:

    JTable table；// the table is already existed, I cannot change it

    TableColumn column = new TableColumn();

    column.setHeaderValue("Icon");
    column.setCellRenderer(new IconCellRenderer());

    table.addColumn(column);


public class IconCellRenderer extends DefaultTableCellRenderer
{
  private static final long serialVersionUID = 1L;

  public IconCellRenderer()
  {
    super();
  }

  @Override
  public Component getTableCellRendererComponent(JTable pTable, Object pValue,
      boolean pIsSelected, boolean pHasFocus, int pRow, int pColumn)
  {
    JLabel label = new JLabel();


    if (checkCondition(..))
    {
      label.setIcon(iconOne);
    } 
    else
    {
      label.setIcon(iconTwo));
    }

    label.setHorizontalAlignment(SwingConstants.CENTER);

    return label;
  }

}

Answer 1

For that purposes you can use TableRowSorter, and set Comparator to needed column. In that comparator you can compare values of cells and sorting them:

TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
sorter.setComparator(0, new Comparator<Object>() {

    @Override
    public int compare(Object o1, Object o2) {
        return 0;
    }
});
table.setRowSorter(sorter);

table is your JTable , model is model of your table.

read more about sorting in JTable.