Campo que some uma coluna da jtable

private void total2020(){

String sql = “select sum(valor) from tb_bruto where matricula like ? and ano = 2021”;

try {

pst = conexao.prepareStatement(sql);

pst.setString(1,txtCedMatricula.getText()+ “%”);

rs = pst.executeQuery();

txtCedCusto2020.setText(DbUtils.resultSetToNestedList(rs).toString());

} catch (Exception e) {
        JOptionPane.showMessageDialog(null,e);
    }
}