Currency amount calculated (JAVA)

Avoid currency Float or Double, lose precision. Recommended BigDecimal

 

scenes to be used

　　Recently a small program payment capabilities, unified under a single interface to provide micro-letter amounts of points, so the amount needs to be converted from yuan points

 

  Initially calculated using Float

public static void main(String[] args) {
        //0.01元
        String fee = "0.01";
        //转为1分
        int money = (int)(Float.parseFloat(fee)*100);
        System.out.println(money);
    }

0.01 yuan is no problem, for a larger amount of "9999999", the result is calculated 9999998.72

 

So instead BigDecimal

public  static  void main (String [] args) {
     // Amount Unit membered 
    String Fee = "9999999" ; 
    the BigDecimal decimal1 = new new the BigDecimal (Fee); 
    the BigDecimal decimal2 = new new the BigDecimal (100 );
     // Amount divided into units 
    int Money =   decimal1.multiply (decimal2) .intValue (); 
    System.out.println (Money); // 9999999 
}