Java – refresh JTable when setautocreaterowsorter is true

I wrote a default table as follows:

public class CustTableRenderer extends DefaultTableCellRenderer{

    @Override
    public Component getTableCellRendererComponent(JTable table,Object value,boolean isSelected,boolean hasFocus,int row,int col) {
        Component comp = super.getTableCellRendererComponent(table,value,isSelected,hasFocus,row,col);
        try {

            Object cellObj = table.getModel().getValueAt(row,7); 
            double cellValue = (Double) cellObj;

            if (cellValue < 0) {
                comp.setBackground(new Color(255,48,48));
            } else if (cellValue == 0) {
                comp.setBackground(new Color(173,255,47));
            } else {
                comp.setBackground(Color.white);
            }

            if (isSelected) {
                comp.setBackground(new Color(71,60,139));
                TableModel model = table.getModel();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return comp;
    }
}

To highlight the row containing column 7 impairment, I also set setautocreaterowsorter to true My problem is that when I click a heading to sort, the table is sorted, but the highlighted rows have not changed, so the wrong rows are highlighted

How do I redraw tables when sorting?

Solution

Coordinates passed to the renderer in the view coordinate system, you must convert them to model coordinates before accessing the model:

int modelRow = table.convertRowIndexToModel(row);
  int modelColumn = table.convertColumnIndexToModel(column);
  cellObject = table.getModel().getValueAt(modelRow,modelColumn);