Java中数据格式化类DecimalFormat中八种舍入模式(Rounding Mode) 目录 1. UP与DOWN的区别 2. CEILING和FLOOR的区别 3. HALF_UP、HALF_DOWN和HALF_EVEN区别 4. UNNECESSARY作用 DecimalFormat用法: doublevalue=11110.82;//舍入模式RoundingModeroundingMode=RoundingMode.HALF_UP;DecimalFormatdf=newDecimalFormat("###,#...
HALF_EVEN(BigDecimal.ROUND_HALF_EVEN), UNNECESSARY(BigDecimal.ROUND_UNNECESSARY);finalintoldMode;privateRoundingMode(intoldMode){this.oldMode = oldMode; }publicstaticRoundingModevalueOf(intrm){switch(rm) {caseBigDecimal.ROUND_UP:returnUP;caseBigDecimal.ROUND_DOWN:returnDOWN;caseBigDecimal.ROUND_CEILING:...
Rounding mode to round towards the "nearest neighbor" unless both neighbors are equidistant, in which case, round towards the even neighbor. 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,如果保留位数是奇数,使用ROUND_HALF_UP ,如果是偶数,使用ROUND_HALF_DOWN ROUND_HALF_UP Rounding mo...
异常发生的原因是因为在调用BigDecimal的某些方法(如setScale)时,传入了一个无效的舍入模式(Rounding Mode)。 2. 查找并阅读相关的Java文档,了解合法的舍入模式 Java的BigDecimal类支持多种舍入模式,这些模式都定义在java.math.RoundingMode枚举中。合法的舍入模式包括: ...
ROUND_HALF_EVEN は、値を最も近い値に丸めます。 最も近い値がそれぞれ等距離の場合、最終の数字が偶数になるように丸めます。 破棄される数字が、左側の数値の 2 分の 1 より大きい場合、結果の係数は 1 だけ増分されます。 2 分の 1 より小さい場合、結果の係数は調整されません (つま...
If the first SQL statement in an activation group is executed from an SQL program or SQL package, the CURRENT DECFLOAT ROUNDING MODE special register is set to the value of the DECFLTRND parameter. Otherwise, the initial value is ROUND_HALF_EVEN. ...
By: ogerep - ogerep rounding mode 2005-11-04 07:24 Hi i noticed that the pattern used in textfield (e.g ###0.00) has a ROUND_HALF_EVEN rounding mode. But if i've to print totals of an invoice report i've to use a matematical rounding mode like ROUND_HALF
翻译:舍入模式可以断言所请求的操作具有准确的结果,因此不需要舍入。如果在产生不精确结果的操作上指定了这种舍入模式,则会引发ArithmeticException。 解释:计算结果必须是精确的,不需要舍入的,否则抛出 ArithmeticException。 代码语言:javascript 复制 importjava.math.BigDecimal;publicclassBigDecimalTest{publicstaticvoid...
HALF_UP Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round up. HALF_DOWN Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round down. HALF_EVEN Rounding mode to round towards the "...
.valueOf(3.56).setScale(1,BigDecimal.ROUND_HALF_DOWN));// 3.6// 6.ROUND_HALF_EVEN// 前一位是奇数,则同ROUND_HALF_UPSystem.out.println(BigDecimal.valueOf(3.55).setScale(1,BigDecimal.ROUND_HALF_EVEN));//3.6System.out.println(BigDecimal.valueOf(3.55).setScale(1,BigDecimal.ROUND_HALF_UP)...