Java NumberFormat getRoundingMode()用法及代碼示例

getRoundingMode()方法是java.text.NumberFormat的內置方法，返回在給定Number格式中使用的舍入模式。

用法：

public RoundingMode getRoundingMode()

參數：該函數不接受任何參數。

返回值：該函數返回用於此數字格式的舍入模式。

下麵是上述函數的實現：

示例1:

// 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()); 
    } 
}

輸出：

The rounding mode value is: HALF_EVEN

示例2:

// 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()); 
    } 
}

輸出：

The rounding mode value is: HALF_EVEN

參考： https://docs.oracle.com/javase/10/docs/api/java/text/NumberFormat.html#getRoundingMode()

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