BigDecimal bigDecimal7 = new BigDecimal("2.12").setScale(1, BigDecimal.ROUND_CEILING); BigDecimal bigDecimal8 = new BigDecimal("2.19").setScale(1, BigDecimal.ROUND_CEILING); BigDecimal bigDecimal9 = new BigDecimal("-2.12").setScale(1, BigDecimal.ROUND_CEILING); BigDecimal bigDecimal10 = new Big...
BigDecimal(double)是把一个double类型十进制数构造为一个BigDecimal对象实例。 BigDecimal(String)是把一个以String表示的BigDecimal对象构造为BigDecimal对象实例。 习惯上,对于浮点数我们都会定义为double或float,但BigDecimal API文档中对于BigDecimal(double)有这么一段话: Note: the results of this constructor can be ...
BigDecimal(double)是把一个double类型十进制数构造为一个BigDecimal对象实例。 BigDecimal(String)是把一个以String表示的BigDecimal对象构造为BigDecimal对象实例。 习惯上,对于浮点数我们都会定义为double或float,但BigDecimal API文档中对于BigDecimal(double)有这么一段话: Note: the results of this constructor can be ...
Rounding mode to round towards"nearest neighbor" unless both neighbors are equidistant, in whichcaseround down. 向(距离)最近的一边舍入,除非两边(的距离)是相等,如果是这样,向下舍入, 例如1.55 保留一位小数结果为1.5ROUND_HALF_EVEN Rounding mode to round towards the"nearest neighbor" unless both neigh...
java保留两位小数问题: 一: 四舍五入(四舍五入形式保留两位小数,注意模式ROUND_HALF_UP) double f = 2345.2345; BigDecimal b = new BigDecimal(f); double f1 = b.setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue(); 保留两位小数 二: double f = 2345.2345; java.text.DecimalFormat df =new java...
BigDecimal.RoundUnnecessary Field Reference Feedback Definition Namespace: Java.Math Assembly: Mono.Android.dll Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary. C# [Android.Runtime.Register("ROUND_UNNECESSARY")]publicconstJava.Math.RoundOptions ...
Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round up. [Android.Runtime.Register("ROUND_HALF_UP")] public const Java.Math.RoundOptions RoundHalfUp = 4; Field Value Value = 4 RoundOptions Attributes RegisterAttribute Remarks Rounding ...
Thisenumis intended to replace the integer-based enumeration of rounding mode constants inBigDecimal(BigDecimal#ROUND_UP,BigDecimal#ROUND_DOWN, etc. ). Added in 1.5. Java documentation forjava.math.RoundingMode. Portions of this page are modifications based on work created and shared by ...
JAVA 四舍五入BigDecimal.ROUND_HALF_DOWN new BigDecimal((endTimeLong -startTimeLong) /1000).divide(new BigDecimal(60),1,BigDecimal.ROUND_HALF_DOWN).doubleValue()
Java provides Math.round for nearest integer, Math.floor to truncate down, and Math.ceil to bump up, all adjusting double values effectively. For instance, Math.round(5.6789) yields 6, while printf with %.2f formats to 5.68 for display purposes. These tools help manage precision, but ...