number format setgroungused()方法在 Java 中的示例

原文:https://www . geeksforgeeks . org/number format-set group used-method-in-Java-with-examples/

setGroupingUsed() 方法是 java.text.NumberFormat 的内置方法，用于设置要使用的分组。

语法:

public void setGroupingUsed(boolean val)

参数:该功能接受一个强制参数值，指定要设置的分组。

返回值:该函数不返回任何内容，因此返回类型为 void。

下面是上述功能的实现:

程序 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
    {

        NumberFormat nF
            = NumberFormat.getNumberInstance();

        System.out.println("Grouping set initially as: "
                           + nF.isGroupingUsed());

        // Set grouping
        nF.setGroupingUsed(false);

        // Print the currency
        System.out.println("Grouping set finally as: "
                           + nF.isGroupingUsed());
    }
}

输出:

Grouping set initially as: true
Grouping set finally as: false

程序二:

// 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
    {

        NumberFormat nF
            = NumberFormat.getNumberInstance();

        System.out.println("Grouping set initially as: "
                           + nF.isGroupingUsed());

        // Set grouping
        nF.setGroupingUsed(true);

        // Print the currency
        System.out.println("Grouping set finally as: "
                           + nF.isGroupingUsed());
    }
}

输出:

Grouping set initially as: true
Grouping set finally as: true

参考:https://docs . Oracle . com/javase/10/docs/API/Java/text/number format . html # setgroupenguised(布尔型)

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