double to long

obj to double 

obj to long 

instance of 

Bigdecimal

    public static void main(String[] args) throws ParseException {
        Object obj1 = 1234;
        Object obj2 = 1234.1;

        BigDecimal a = new BigDecimal(obj2.toString());
        
        System.out.println(a.longValue());
    }

 

转载于:https://www.cnblogs.com/lwmp/p/10919777.html