bigdecimal gives you control over how values are rounded. by default
How to round with BigDecimal using round_half_down?
Rounding with BigDecimal using ROUND_HALF_DOWN is defined in JavaDoc as " ROUND_HALF_DOWN - Rounding mode to round towards "nearest neighbor" unless both neighbors are equidistant, in which case round down. " Documentation ROUND_HALF_DOWN Documentation RoundingMode.HALF_DOWN
How do I rounded a value in BigDecimal?
Assuming value holds the value to be rounded: BigDecimal scaled = value.setScale (0, RoundingMode.HALF_UP); System.out.println (value + " -> " + scaled); Using round () is a bit more involved as it requires you to specify the number of digits to be retained. In your examples this would be 3, but this is not valid for all values:
What is the value of a BigDecimal?
The value of the number represented by the BigDecimal is therefore (unscaledValue × 10-scale) . The BigDecimal class provides operations for arithmetic, scale manipulation, rounding, comparison, hashing, and format conversion. The toString () method provides a canonical representation of a BigDecimal .
What is BigDecimal in Java?
The BigDecimal class provides operations for arithmetic, scale manipulation, rounding, comparison, hashing, and format conversion. The toString () method provides a canonical representation of a BigDecimal . The BigDecimal class gives its user complete control over rounding behavior.
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Use the static method range of class EnumSet (declared in package java util) to In addition to precise calculations, BigDecimal also gives you control over how values are rounded—by default all calculations are exact and no rounding |
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