BigDecimal类的restder()方法 (BigDecimal Class remainder() method)

Syntax:

句法：

    public BigDecimal remainder(BigDecimal divsr);
public BigDecimal remainder(BigDecimal divsr, MathContext ma_co);

• remainder() method is available in java.math package.

  restder()方法在java.math包中可用。

• remainder (BigDecimal divsr) method is used to calculate the remainder by using ([this BigDecimal] % divsr).

  余数(BigDecimal divsr)方法用于通过使用([this BigDecimal]％divsr)计算余数。

• remainder(BigDecimal divsr, MathContext ma_co) method is used to calculate the remainder by using ([this BigDecimal] % divsr) along with rounding based on the given MathContext settings.

  restder(BigDecimal divsr，MathContext ma_co)方法用于通过使用([this BigDecimal]％divsr)以及基于给定MathContext设置的舍入来计算余数。

• These methods may throw an exception at the time of calculating the remainder.

  这些方法在计算余数时可能会引发异常。

  ArithmeticException: This exception may throw when the calculated result is not accurate but the mode of rounding "UNNECESSARY".

  ArithmeticException ：当计算结果不准确，但舍入模式为“ UNNECESSARY”时，可能会引发此异常。

• These are non-static methods and it is accessible with class objects and if we try to access these methods with the class name then we will get an error.

  这些是非静态方法，可通过类对象访问，如果尝试使用类名访问这些方法，则会收到错误消息。

Parameter(s):

参数：

• In the first case, remainder(BigDecimal divsr),

  在第一种情况下， remainder(BigDecimal divsr) ，

  • BigDecimal divsr – represents the divisor by which this BigDecimal value is to be divided for calculating remainder.
  • BigDecimal divsr –表示该BigDecimal值将被除以计算余数的除数。

• In the first case, remainder(BigDecimal divsr, MathContext ma_co),

  在第一种情况下， 剩下的是(BigDecimal divsr，MathContext ma_co) ，

  • BigDecimal divsr – Similar as defined in the first case.
  • BigDecimal divsr –与第一种情况下定义的相似。
  • MathContext ma_co – represents the context setting to use in rounding.
  • MathContext ma_co –表示要舍入的上下文设置。

Return value:

返回值：

In both the cases, the return type of the method is BigDecimal,

在这两种情况下，方法的返回类型均为BigDecimal 。

• In the first case, it returns the remainder when this BigDecimal object divides by the given divisor.

  在第一种情况下，当此BigDecimal对象除以给定的除数时，它将返回余数。

• In the second case, it returns the remainder when this BigDecimal object divides by the given divisor with rounding.

  在第二种情况下，当此BigDecimal对象通过舍入除以给定的除数时，它将返回余数。

Example:

例：

// Java program to demonstrate the example 
// of remainder() method of BigDecimal
import java.math.*;
public class RemainderOfBD {
public static void main(String args[]) {
// Initialize three variables divi1,
// divi2 and str 
String divi1 = "120.12";
String divi2 = "40.55";
String str = "5";
// Initialize three BigDecimal objects and
// one MathContext
BigDecimal b_dec1 = new BigDecimal(divi1);
BigDecimal b_dec2 = new BigDecimal(divi2);
BigDecimal b_dec3 = new BigDecimal(str);
MathContext ma_co = new MathContext(3, RoundingMode.CEILING);
System.out.println("remainder(BigDecimal): ");
// divides this BigDecimal (b_dec1) by the
// given BigDecimal (b_dec3) and return the BigDecimal
// object that holds the value of the remainder
BigDecimal remainder = b_dec1.remainder(b_dec3);
System.out.println("b_dec1.remainder(b_dec3): " + remainder);
System.out.println(" ");
System.out.println("remainder(BigDecimal,MathContext): ");
// divides this BigDecimal (b_dec2) by the
// given BigDecimal (b_dec3) based on the given
// context setting and return the BigDecimal object
// that holds the value of the remainder
remainder = b_dec2.remainder(b_dec3, ma_co);
System.out.println("b_dec2.remainder(b_dec3,ma_co): " + remainder);
}
}

Output

输出量

remainder(BigDecimal): 
b_dec1.remainder(b_dec3): 0.12remainder(BigDecimal,MathContext): 
b_dec2.remainder(b_dec3,ma_co): 0.55

翻译自: https://www.includehelp.com/java/bigdecimal-remainder-method-with-example.aspx