How to use Math.ceil() to round a number up to n decimal places? package com.logicbig.example.math;public class CeilExample2 { public static void main(String... args) { roundUp(115.9711123, 3); roundUp(91.1236234, 2); roundUp(-139.5114223, 5); roundUp(-0.1998234, 4); } private stati...
To solve this issue, we can take one of two paths: We can useMath.round()to create incantations that we hope will toss out those miniscule fractions of pennies at exactly the right time, or we can use a decimal library. A decimal library’s job is to do math using the same base 10...
public enum MidpointRounding { ToEven, AwayFromZero } public static class DecimalExtensions { public static decimal Round(this decimal d, MidpointRounding mode) { return d.Round(0, mode); } /// /// Rounds using arithmetic (5 rounds up) symmetrical (up is away from zero) rounding /// ...
public static double round(double value, int places) { if (places < 0) throw new IllegalArgumentException(); BigDecimal bd = new BigDecimal(value); bd = bd.setScale(places, RoundingMode.HALF_UP); return bd.doubleValue(); } 代码示例来源:origin: stackoverflow.com ...
In this Java tutorial, we'll explore the Math.round(), Math.ceil() and Math.floor() methods in detail, understand their differences and discover their use cases.
如何在 Java 中格式化数字? doubler=5.1234;System.out.println(r);// r is 5.1234intdecimalPlaces=2;BigDecimalbd=newBigDecimal(r);// setScale is immutablebd=bd.setScale(decimalPlaces,BigDecimal.ROUND_HALF_UP);r=bd.doubleValue();System.out.println(r);// r is 5.12 ...
将double 舍入到小数点后 2 位 publicstaticdoubleround(doublevalue,intplaces){if(places<0)thrownewIllegalArgumentException();BigDecimalbd=newBigDecimal(value);bd=bd.setScale(places,RoundingMode.HALF_UP);returnbd.doubleValue();} 代码来源:stackoverflow.com ...
Java Copy using System; class Geeks { public static void Main() { double[] val = {18527.475,28527.475,38527.475}; Console.WriteLine("Rounded values are:"); foreach(double value in val) Console.WriteLine("{0} == {1}", value, Math.Round(value, 2, MidpointRounding.AwayFromZero)); } ...
Using the integer fields in this class (such as #ROUND_HALF_UP) to represent rounding mode is deprecated; the enumeration values of the RoundingModeenum, (such as RoundingMode#HALF_UP) should be used instead. When a MathContext object is supplied with a precision setting of 0 (for example,...
round up to 2 decimal places in java? BigDecimal a =newBigDecimal("123.13698");BigDecimal roundOff = a.setScale(2, BigDecimal.ROUND_HALF_EVEN);System.out.println(roundOff); origin:stackoverflow.com Round a double in Java staticDouble round(Double d,intprecise){BigDecimal bigDecimal =newBigDeci...