Java中的 NumberFormat getRoundingMode() 方法及示例

getRoundingMode()方法是Java.text.NumberFormat的内置方法，返回在给定数字格式中使用的舍入模式。

语法：

public RoundingMode getRoundingMode()

参数：该函数不接受任何参数。

返回值：该函数返回用于此数字格式的舍入模式。

下面是上述函数的实现：

方案一：

// Java program to implement
// the above function
  
import java.text.NumberFormat;
import java.util.Locale;
import java.util.Currency;
  
public class Main {
    public static void main(String[] args)
        throws Exception
    {
  
        // Get the instance for Locale US
        NumberFormat nF
            = NumberFormat.getInstance(
                Locale.US);
  
        // Prints the Rounding Mode
        System.out.println("The rounding mode"
                           + " value is: "
                           + nF.getRoundingMode());
    }
}

输出：

The rounding mode value is: HALF_EVEN

方案二：

// Java program to implement
// the above function
  
import java.text.NumberFormat;
import java.util.Locale;
import java.util.Currency;
  
public class Main {
    public static void main(String[] args)
        throws Exception
    {
  
        // Get the instance for Locale CANADA
        NumberFormat nF
            = NumberFormat.getInstance(
                Locale.CANADA);
  
        // Prints the Rounding Mode
        System.out.println("The rounding mode"
                           + " value is: "
                           + nF.getRoundingMode());
    }
}

输出：

The rounding mode value is: HALF_EVEN

参考： https: Java/text/NumberFormat.html#getRoundingMode()