java中计算金额问题

 

//加法

public static double addition(double param1,double param2)

{

BigDecimal num1 = new BigDecimal(Double.toString(param1));

BigDecimal num2 = new BigDecimal(Double.toString(param2));

BigDecimal countTotail = nw BigDecimal(num1.add(num2).doubleValue());

return coutTotail.setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue();

}

 

 

//乘法

public static double multiplication(double v1,double v2)

{

BigDecimal b1 = new BigDecimal(Double.toString(v1));

BigDecimal b2 = new BigDecimal(Double.toString(v2));

BigDecimal pricetotal= nw BigDecimal(b1.multiply(b2).doubleValue());

return pricetotal.setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue();

 

 

}