Java四舍五入BigDecimal值，在2个级别保留2位小数

Question

decimalValue=10.2345在使用下面的代码进行舍入后给出10.23

decimalValue.setScale(2, RoundingMode.HALF_UP)

我需要将值显示为10.24。找到了一种在两个级别进行舍入的解决方案，例如先舍入到3位数，然后舍入到2位数，如下所示

decimalValue.setScale(3, RoundingMode.HALF_UP).setScale(2, RoundingMode.HALF_UP)

请建议是否有更好的解决方案

Answer 1

RoundingMode.HALF_UP将对.5及以上的数据进行汇总

HALF_UP

Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round up. Behaves as for RoundingMode.UP if the discarded fraction is ≥ 0.5; otherwise, behaves as for RoundingMode.DOWN.

改用RoundingMode.UP

decimalValue.setScale(2, RoundingMode.UP)