package com; import java.math.BigDecimal; import java.math.RoundingMode; public class Product { private String name; private Double amount; public String getName() { return name; } public void setName(String name) { this.name = name; } public Double getAmount() { return amount; } public ...
publicclassMathRoundExample{publicstaticdoubleroundToTwoDecimalPlaces(doublenumber){returnMath.round(number*100)/100.0;}publicstaticvoidmain(String[]args){doublenumber=3.14159;System.out.println("保留两位小数四舍五入后的结果:"+roundToTwoDecimalPlaces(number));}} 1. 2. 3. 4. 5. 6. 7. 8. 9....
System.out.println("Double Number: "+ num); BigDecimal bd =newBigDecimal(num).setScale(2, RoundingMode.HALF_UP); doublenewNum = bd.doubleValue(); System.out.println("Up to two decimal places: "+ newNum); } } Output: Double Number: 12.4565652239 Up to two decimal places: 12.46 ...
new Double("12.00") will create a Double with a value of 12d, and doubleValue() will simply return primitive double value 12d. Furthermore, using .## means that the value will be rounded off to 2 decimal places, but if you have a value with less than 2 decimal places, it will not...
Here’s an example code snippet that demonstrates how to multiply two numbers usingDecimalFormatand round the result to two decimal places: importjava.text.DecimalFormat;publicclassDecimalFormatExample{publicstaticvoidmain(String[]args){doublenum1=3.1415;doublenum2=2.7182;doubleresult=num1*num2;DecimalFor...
There are multiple ways to round a double or float value into 2 decimal places in Java. You can use one of the following methods: The DecimalFormat class The BigDecimal class The String.format() method The Math.round() method Note: If you are formatting a currency, always use the ...
doubley = Math.round(100* x) / 100d; Joyce Peter Chase Ranch Hand Posts: 1970 1 posted 19 years ago Originally posted by Joyce Lee: How about this? ? 1 2 doublex =10.023445656; doubley = Math.round(100* x) / 100d; No, that's not a good way to do it. The reason is that ...
double a = sc.nextDouble(); 。。。 } } } } 例3:读入字符串【杭电2017 字符串统计】 输入数据有多行,第一行是一个整数n,表示测试实例的个数,后面跟着n行,每行包括一个由字母和数字组成的字符串。 [java] view plain copy Sample Input 2 asdfasdf123123asdfasdf asdf111111111asdfasdfasdf...
Format double to 2 decimal places in java Read more → Print float to 2 decimal places in java Read more → Java float vs double Let’s list down differences between float and double now, Parameterfloatdouble Memory 4 bytes 8 bytes Precision A float can give you approx 6-7 decinal ...
However, to format the output of a double to two decimal places, simplyuse theprintfmethodand%.2fas the specifier. public classJavaDoublePrecision {/* Print Java double to 2 decimals of precision. */public static voidmain(String[] args) {doublebig= 1234.12345;floatsmall= 1234.12345f;System....