java 根據類名示例化類

MathContext類的getRoundingMode()方法 (MathContext Class getRoundingMode() method)

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

  getRoundingMode()方法在java.math包中可用。

• getRoundingMode() method is used to get the RoundingMode value of this MathContext if defined and there are many constants of Rounding Mode like DOWN, CEILING, UNNECESSARY, FLOOR, etc.

  如果已定義，則getRoundingMode()方法用于獲取此MathContext的RoundingMode值，并且舍入模式有許多常量，如DOWN，CEILING，UNNECESSARY，FLOOR等。

• getRoundingMode() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  getRoundingMode()方法是一種非靜態方法，僅可通過類對象訪問，如果嘗試使用類名訪問該方法，則會收到錯誤消息。

• getRoundingMode() method does not throw an exception at the time of getting round mode.

  在獲取回合模式時， getRoundingMode()方法不會引發異常。

Syntax:

句法：

    public RoundingMode getRoundingMode();

Parameter(s):

參數：

• None

  沒有

Return value:

返回值：

The return type of this method is RoundingMode, it returns the RoundingMode constants whatever be defined with this MathContext.

此方法的返回類型為RoundingMode ，無論此MathContext定義什么，它都會返回RoundingMode常量。

Example:

例：

// Java program to demonstrate the example 
// of RoundingMode getRoundingMode() method of MathContext
import java.math.*;
public class GetRoundingModeOfMC {
public static void main(String args[]) {
// Initialize three MathContext objects  
MathContext ma_co1 = new MathContext(3, RoundingMode.CEILING);
MathContext ma_co2 = new MathContext(4);
MathContext ma_co3 = new MathContext(6, RoundingMode.FLOOR);
// returns the rounding mode of this MathContext
// ma_co1 i.e. RoundingMode is the second
// parameter set in MathContext Constructor
// i.e. CEILING in ma_co1
RoundingMode rm = ma_co1.getRoundingMode();
System.out.println("ma_co1.getRoundingMode(): " + rm);
// returns the rounding mode of this MathContext
// ma_co2 i.e. RoundingMode is the second
// parameter set in MathContext Constructor
// i.e. HALF_UP in ma_co2 it the default set
// when we don't use other rounding mode
rm = ma_co2.getRoundingMode();
System.out.println("ma_co2.getRoundingMode(): " + rm);
// returns the rounding mode of this MathContext
// ma_co3 i.e. RoundingMode is the second
// parameter set in MathContext Constructor
// i.e. FLOOR in ma_co1
rm = ma_co3.getRoundingMode();
System.out.println("ma_co3.getRoundingMode(): " + rm);
}
}

Output

輸出量

ma_co1.getRoundingMode(): CEILING
ma_co2.getRoundingMode(): HALF_UP
ma_co3.getRoundingMode(): FLOOR

翻譯自: https://www.includehelp.com/java/mathcontext-getroundingmode-method-with-example.aspx

java 根據類名示例化類