Decimal Format con Bigdecimal

// jTextFieldpuniKeyReleased -Propiedades del Objeto//
    double suma ;
        double cant = Double.parseDouble(jTextFieldcant.getText());
        double precio = Double.parseDouble(jTextFieldpuni.getText());
        suma = precio*cant ;
        jTextFieldtot.setText(String.format("%.2f", (double)suma));
//
//    Con BigDecimal -------------------
//         BigDecimal suma = new BigDecimal("0");
//         BigDecimal cant = new BigDecimal(jTextFieldcant.getText());
//         cant = cant.setScale(2, RoundingMode.HALF_UP);
//         BigDecimal precio = new BigDecimal(jTextFieldpuni.getText());
//       precio = precio.setScale(2, RoundingMode.HALF_UP);
//         suma = precio.multiply(cant);
//         suma = suma.setScale(2, RoundingMode.HALF_UP);
//         TextFieldtot.setText(suma+"");