NumberFormat.getCurrencyInstance()不返回中国和法国地区的货币符号(jdk-1.8)

Question

我写了一个用一些国家的货币符号返回双值的程序。为此，我使用getCurrencyInstance()方法获取特定国家的符号。

这个问题是我的笔记本电脑的JDK-1.8特有的，并且在在线编译器上运行得很好。我面临的问题是中国和法国的货币符号是用“？”来代表的。但在印度和美国，则显示了正确的符号。

我正在研究这个问题一段时间。因此，任何线索都会有帮助。

这是我的代码：

import java.util.Scanner;
import java.text.NumberFormat;
import java.util.Locale;

public class Solution {

public static void main(String[] args) {
    /* Read input */
    Scanner scanner = new Scanner(System.in);
    double payment = scanner.nextDouble();
    scanner.close();

    /* Create custom Locale for India.
    Locale indiaLocale = new Locale("en", "IN");

    /* Create NumberFormats using Locales */
    NumberFormat us     = NumberFormat.getCurrencyInstance(Locale.US);
    NumberFormat india  = NumberFormat.getCurrencyInstance(indiaLocale);
    NumberFormat china  = NumberFormat.getCurrencyInstance(Locale.CHINA);
    NumberFormat france = NumberFormat.getCurrencyInstance(Locale.FRANCE);

    /* Print output */        
    System.out.println("US: "     + us.format(payment));
    System.out.println("India: "  + india.format(payment));
    System.out.println("China: "  + china.format(payment));
    System.out.println("France: " + france.format(payment));
}
}

我的机器上相应的输出是：

12324.134
US: $12,324.13
India: Rs.12,324.13
China: ?12,324.13
France: 12 324,13 ?

Answer 1

对于中国来说，使用这个代码。Numberformat类的getCurrency().getSymbol(locale)将返回特定区域的货币符号。System.out.println("China: " + china.getCurrency().getSymbol(Locale.CHINA) + china.format(payment));

对于法国，请使用此System.out.println("France: " + france.format(payment) + " " + france.getCurrency().getSymbol(Locale.FRANCE));

Answer 2

Hackerrank挑战中的问题是没有UTF-8编码。试着使用这个：

import java.util.Scanner;
import java.text.NumberFormat;
import java.util.Locale;

public class Solution {

public static void main(String[] args) {
    /* Read input */
    Scanner scanner = new Scanner(System.in);
    double payment = scanner.nextDouble();
    scanner.close();

    /* Create custom Locale for India.*/
    Locale indiaLocale = new Locale("en", "IN");

    /* Create NumberFormats using Locales */
    NumberFormat us     = NumberFormat.getCurrencyInstance(Locale.US);
    NumberFormat india  = NumberFormat.getCurrencyInstance(indiaLocale);
    NumberFormat china  = NumberFormat.getCurrencyInstance(Locale.CHINA);
    NumberFormat france = NumberFormat.getCurrencyInstance(Locale.FRANCE);

    /* Print output */
    try {
      System.setOut(new PrintStream(new FileOutputStream(FileDescriptor.out), true, "UTF-8"));        
      System.out.println("US: "     + us.format(payment));
      System.out.println("India: "  + india.format(payment));
      System.out.println("China: "  + china.format(payment));
      System.out.println("France: " + france.format(payment));
    } catch (Exception e) {
      System.out.println("HackerRank please fix your test terminal");
    }
  }
}

Answer 3

解决办法是这样的.

对印度人来说，没有货币。我们必须使用decimalFormatter格式化它，如下所示。

DecimalFormat IndianCurrencyFormat = new DecimalFormat("##,##,###.00");
            NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.US);
            NumberFormat nf1 = NumberFormat.getCurrencyInstance(Locale.CHINA);
            NumberFormat nf2 = NumberFormat.getCurrencyInstance(Locale.FRANCE);
            String us = nf.format(payment);
            String india ="Rs." + IndianCurrencyFormat.format(payment);
            String china =nf1.format(payment);
            String france =nf2.format(payment);
           System.out.println("US: " + us);
        System.out.println("India: " + india);
        System.out.println("China: " + china);
        System.out.println("France: " + france);