public class ExponentialDemo { public static void main(String[] args) { double x = 9; double y = 2; System.out.printf("The value of " + "e is %.4f%n", Math.E); System.out.printf("exp(%.3f) " + "is %.3f%n", x, Math.exp(x)); System.out.printf("log(%.3f) is " ...
BigDecimal(Double) Translates a double into a BigDecimal which is the exact decimal representation of the double's binary floating-point value. BigDecimal(Int32, MathContext) Translates an int into a BigDecimal, with rounding according to the context settings. BigDecimal(Int32) Translates an int...
private final double value;//用来保存这个类包装的double的数值 1. 4.构造方法 Double(double value) 将double封装成Double对象 public Double(double value) { this.value = value; } 1. 2. 3. Double(String s) 将String解析成double,再将其封装成Double对象 public Double(String s) throws NumberFormatEx...
3. Formatting a Decimal Number If we just want to print a decimal number withndigits after the decimal point, we can simply format the output String: System.out.printf("Value with 3 digits after decimal point %.3f %n", PI); // OUTPUTS: Value with 3 digits after decimal point 3.142 ...
public BigDecimal(double val) Translates a double into a BigDecimal which is the exact decimal representation of the double's binary floating-point value. The scale of the returned BigDecimal is the smallest value such that (10scale× val) is an integer. Notes: The results of this construct...
If the precision is less than the number of digits which would appear after the decimal point in the string returned by Float.toString(float) or Double.toString(double) respectively, then the value will be rounded using the round half up algorithm. Otherwise, zeros may be appended to reach ...
The character used to represent digits may vary by culture. This method specifies the zero character to use, which implies the characters for one to nine. Java documentation for java.time.format.DecimalStyle.getZeroDigit(). Portions of this page are modifications based on work created and s...
getminimumentegerdigits()方法是 java 中 java.text.DecimalFomrat 类的内置方法,用于获取一个数字的整数部分所允许的最小位数。数字的整数部分被定义为小数点前的部分。).例如,在数字 123,45.678 中,整数部分是 123,45。语法 :public int getMinimumIntegerDigits() ...
功能 工作負載 API 疑難排解 資源 下載.NET 版本 .NET for Android API 35 整數除法運算 DoubleValue 浮點值 IntValue IntValueExact LongValue LongValueExact 麥克斯 最小值 MovePointLeft (左移小數點) MovePointRight 乘以 否定 加 砰 精度 剩餘
* 2.eq()表示相等 * 3.pe()表示打印异常(应该设置一个开关打开异常打印方便程序部署) * 4.t*()表示转换成相应的类型 * 5.Double精度的计算:(1) 价格 (2)价格、数量、金额、税额 * 6.Double精度计算用的是四舍五入 * * */ public final class AirUtils { private ...