Java 中的 Currency getdefaultfractiondigts()方法示例

原文:https://www . geeksforgeeks . org/currency-getdefaultfractionndigits-method-in-Java-with-examples/

Java 中 币类 的getDefaultFractionDigits()方法用于检索或知道该币的小数位数，这是 ISO 4217 币码设置的默认值。

语法:

public int getDefaultFractionDigits()

参数:此方法不接受任何参数。

返回值:此方法返回一个整数值，它是货币的默认小数位数。

异常:如果调用了无效代码，该方法将抛出运行时错误。

下面的程序说明了 getDefaultFractionDigits()方法的工作原理:

程序 1:

// Java Code to illustrate
// getDefaultFractionDigits() method

import java.util.*;

public class Currency_Demo {
    public static void main(String[] args)
    {

        // Creating a currency with the code
        Currency curr_ency
            = Currency.getInstance("INR");

        // Getting the fraction digit of the currency
        int currency_fracdig
            = curr_ency.getDefaultFractionDigits();
        System.out.println("INR's fractions digits are: "
                           + currency_fracdig);
    }
}

Output:

INR's fractions digits are: 2

程序 2:

// Java Code to illustrate
// getDefaultFractionDigits() method

import java.util.*;

public class Currency_Demo {
    public static void main(String[] args)
    {

        // Creating a currency with the code
        Currency curr_ency
            = Currency.getInstance("JOD");

        // Getting the fraction digit of the currency
        int currency_fracdig
            = curr_ency.getDefaultFractionDigits();
        System.out.println("Jordan's fractions digits are: "
                           + currency_fracdig);
    }
}

Output:

Jordan's fractions digits are: 3

程序 3: 为无效的货币代码。

// Java Code to illustrate
// getDefaultFractionDigits() method

import java.util.*;

public class Currency_Demo {
    public static void main(String[] args)
    {

        try {
            // Creating a currency with the code
            Currency curr_ency
                = Currency.getInstance("JODA");

            // Getting the fraction digit of the currency
            int currency_fracdig
                = curr_ency.getDefaultFractionDigits();
            System.out.println("Jordan's fractions digits are: "
                               + currency_fracdig);
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

java.lang.IllegalArgumentException

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