double转bigDecimal:
public static void main(String[] args) {
double d = 1.1;BigDecimal bd1 = new BigDecimal(d); //(1)
BigDecimal bd2 = BigDecimal.valueOf(d);//(2)
BigDecimal bd3 = new BigDecimal("1.1");//(3)
System.out.println(bd1);//打印1.100000000000000088817841970012523233890533447265625
System.out.println(bd2);//打印1.1
System.out.println(bd3);//打印1.1
System.out.println(bd1.compareTo(bd2));//打印1
System.out.println(bd1.compareTo(bd3));//打印1
System.out.println(bd2.compareTo(bd3));//打印0
}
用(1)方法传double直接new BigDecimal,数会变大,(2)(3)不会,建议不要用(1)
转载地址:http://blog.youkuaiyun.com/linbrain0000/article/details/49716997#
bigDecimal转int:
BigDecimal a= new BigDecimal("100")
Integer b = a.intValue();