Java.math.MathContext.getRoundingMode() 方法

說明

java.math.MathContext.getRoundingMode() 返回 roundingMode 設定。

這將是 RoundingMode.CEILING、RoundingMode.DOWN、RoundingMode.FLOOR、RoundingMode.HALF_DOWN、RoundingMode.HALF_EVEN、RoundingMode.HALF_UP、RoundingMode.UNNECESSARY 或 RoundingMode.UP 之一。

宣告

以下是 java.math.MathContext.getRoundingMode() 方法的宣告。

public RoundingMode getRoundingMode()

引數

無

返回值

此方法返回一個 RoundingMode 物件，該物件是 roundingMode 設定的值。

異常

無

無

示例

package com.tutorialspoint;

import java.math.*;

public class MathContextDemo {

   public static void main(String[] args) {

      // create 2 MathContext objects
      MathContext mc1, mc2;

      // assign context settings to mc1, mc2
      mc1 = new MathContext(4);
      mc2 = new MathContext(50, RoundingMode.CEILING);

      // create 2 RoundingMode objects
      RoundingMode rm1, rm2;

      // assign roundingmode of mc1, mc2 to rm1, rm2
      rm1 = mc1.getRoundingMode();
      rm2 = mc2.getRoundingMode();
   
      String str1 = "Rounding Mode of mc1 is " + rm1;
      String str2 = "Rounding Mode of mc2 is " + rm2;

      // print rm1, rm2 values
      System.out.println( str1 );
      System.out.println( str2 );
   }
}

線上演示

Rounding Mode of mc1 is HALF_UP
Rounding Mode of mc2 is CEILING