public static double TwoDecimalPlaces(double number) { BigDecimal b = new BigDecimal(Double.toString(number)); return b.setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue(); } 1. 2. 3. 4. 5. 最后,我还是跟API说的一样,将double转换为String之后在构造BigDecimal函数,这样就应该没错了吧。(由于错...
importjava.text.DecimalFormat;publicclassDoubleCheck{publicstaticvoidmain(String[]args){doublenumber=3.14;// 将double转换为字符串StringnumberString=Double.toString(number);// 创建DecimalFormat对象,指定小数点后面保留两位DecimalFormatdecimalFormat=newDecimalFormat("#0.00");// 使用DecimalFormat格式化字符串Stringform...
Learn toround off numeric values (floats and doubles) to 2 decimal places in Java. Note that we can use the given solutions to round off to any number of places according to requirements. Quick Reference doublenumber=4.56789; // 1. Using Math.round()doublerounded=Math.round(number*100.0)/...
The program formats a double value in two formats. var df = new DecimalFormat("#.##"); We create a new instance of theDecimalFormat. We pass it a non-localized pattern string. The pattern defines a format for a decimal value with a dot followed by two decimal places. df.applyPattern("...
import java.math.BigDecimal; import java.math.RoundingMode; public class RoundDouble { public static void main(String[] args) { double value = 123.4567; // 示例数值 double roundedValue = roundToTwoDecimalPlaces(value); System.out.println("四舍五入后的数值: " + roundedValue); } public stati...
Rounding bigdecimal to 2 decimal places Check BigDecimal contains Zero or not Convert BigInteger to/from ByteArray #How to Convert BigDecimal to Double in Java The BigDecimal class in Java provides a method named doubleValue for converting BigDecimal to a double value. Depending on the magnitude of...
In this short tutorial, we’ll learn how to round a number tondecimal places in Java. 2. Decimal Numbers in Java Java provides two primitive types that we can use for storing decimal numbers:floatanddouble.Doubleis the default type:
//multiplicationwithfloatingpointnumbersroundedtotwodecimalplacesusingtheFMTtemplateprocessor publicstaticStringmultiplyFloatingNumbers(doublea,doubleb){ returnFMT."%.2f{a}times%.2f{b}=%.2f{a*b}"; } publicstaticStringgetErrorResponse(inthttpStatus,StringerrorMessage){ ...
We can also createBigDecimalfromdouble, but this can lead to unexpected results due to howdoubles represent decimal values. For instance: @Test public void whenBigDecimalCreatedFromDouble_thenValueMayNotMatch() { BigDecimal bdFromDouble = new BigDecimal(0.1d); ...
doublenumber=4.4;longrounded=Math.round(number);//4 We useMath.round()in the following example user cases: In financial applications, we can round monetary amounts to two decimal places. In statistical calculations, we can round values to avoid excessive decimal places in results. ...