1.只要输出结果
1
2
|
double
x1 =
0.026
;
System.out.println(String.format(
"%.2f"
, x1));
|
2.数据转换
1
2
3
4
5
6
7
8
9
10
11
|
//方案一:
get_double = (
double
)(Math.round(result_value*
100
)/
100.0
)
//方案二:
DecimalFormat df =
new
DecimalFormat(
"#.##"
);
get_double = Double.ParseDouble(df.format(result_value));
//方案三:
get_double = Double.ParseDouble(String.format(
"%.2f"
,result_value));
//方案四:
BigDecimal bd =
new
BigDecimalresult_value();
BigDecimal bd2 = bd.setScale(
2
,BigDecimal .ROUND_HALF_UP);
get_double = Double.ParseDouble(bd2.ToString());
|
3.只保留两位小数(不含四舍五入)
1
2
|
double
d =
13.4324
;
d=((
int
)(d*
100
))/
100
;
|
本文转自 glblong 51CTO博客,原文链接:http://blog.51cto.com/glblong/1312340,如需转载请自行联系原作者