NumberFormat.getCurrencyInstance() 不返回区域设置 CHINA 和 FRANCE 的货

我编写了一个程序来返回带有某些国家/地区货币符号的双精度值。为此，我正在使用getCurrencyInstance()方法来获取特定国家的符号。

该问题特定于我的笔记本电脑的JDK-1.8，并且在在线编译器上工作正常。我面临的问题是，中国和法国的货币符号用"？"表示。但对于印度和美国，显示了正确的符号。

我现在正在解决这个问题一段时间。因此，任何线索都会有所帮助。

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 ?

对于中国，请使用此代码。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));

Hackerrank challenge的问题是没有UTF-8编码。尝试使用这个：

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");
    }
  }
}

解决方案将是这样的;

对于印度卢比，没有货币。我们必须使用十进制格式化它，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);

我的解决方案只是做子字符串摆脱 UTF-8 问题

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;
/*
 * input 12324.134
 * output
 * US: $12,324.13
 * India: Rs.12,324.13
 * China: ￥12,324.13
 * France: 12 324,13 €
 */
import java.util.Scanner;
public class Solution {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double payment = scanner.nextDouble();
        scanner.close();
        // Write your code here.
        DecimalFormat formatter = new DecimalFormat("###,###.00");
        double roundOff = Math.round(payment * 100) / 100.00;
        String us = NumberFormat.getCurrencyInstance().format(roundOff);
        String india = "Rs." + formatter.format(roundOff);
        String china = NumberFormat.getCurrencyInstance(Locale.CHINA).format(roundOff);
        String france_initial = NumberFormat.getCurrencyInstance(Locale.FRENCH).format(roundOff);
        int len = france_initial.length();
        String france = france_initial.substring(0, len - 1) + " €";
        System.out.println("US: " + us);
        System.out.println("India: " + india);
        System.out.println("China: " + china);
        System.out.println("France: " + france);
    }
}

如果您需要为货币设置符号或如果您想要自定义货币符号，您可以尝试这个。

 Locale indialocal = new Locale("en","India");
 NumberFormat india = NumberFormat.getCurrencyInstance(indialocal);
 DecimalFormatSymbols deciFs = new DecimalFormatSymbols();
 deciFs.setCurrencySymbol("Rs.");
 ((DecimalFormat) india).setDecimalFormatSymbols(deciFs);
  System.out.println("India: " + india.format(payment));

您也可以尝试此代码，因为上述代码不适用于我的笔记本电脑。特别用于日元的象征

public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    System.out.print("Input --> ");
    double payment = scanner.nextDouble();
    scanner.close();
    Locale indiaLocale = new Locale("en", "IN");
    NumberFormat u = NumberFormat.getCurrencyInstance(Locale.US);
    NumberFormat i = NumberFormat.getCurrencyInstance(indiaLocale);
    NumberFormat c = NumberFormat.getCurrencyInstance(Locale.SIMPLIFIED_CHINESE);
    NumberFormat f = NumberFormat.getCurrencyInstance(Locale.FRANCE);
    System.out.println("US: " + u.format(payment));
    System.out.println("India: " + i.format(payment));
    System.out.println("China: " + c.format(payment));
    System.out.println("France: " + f.format(payment));

}

在您的控制台中 -->

输入 --> 12324.134

美国： $1,232.13

印度：₹1,232.13

中国：¥1,232.13

法国： 1 232,13 €

如果您的解决方案由于日元符号而不起作用，请尝试粘贴该代码，但在 Java 7 中：

import java.io.*;
import java.util.*;
import java.text.NumberFormat;
import java.text.DecimalFormat;

public class Solution {
    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        Double number = sc.nextDouble();
        DecimalFormat IndianCurrencyFormat = new DecimalFormat("##,##,###.00");
       
  
        
        String formattedStr = NumberFormat.getCurrencyInstance(Locale.US).format(number);
        System.out.println("US: " + formattedStr);
        System.out.println("India: Rs." + IndianCurrencyFormat.format(number));
        formattedStr = NumberFormat.getCurrencyInstance(Locale.CHINA).format(number);
        System.out.println("China: " + formattedStr);
        formattedStr = NumberFormat.getCurrencyInstance(Locale.FRANCE).format(number);
        System.out.println("France: " + formattedStr);
        
        
        
    }
}

在Java 15中，这是行不通的。

手动设置货币格式可能很困难。相反，您可能希望通过.getCurrencyInstances(new Locale("X", "Y"))方法创建本地实例。

对于中国的参数将是："zh"，"CN"
法国： "sk" ， "SK"

例：

import java.util.*;
import java.text.*;
import java.text.NumberFormat;
public class Solution {
    
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double payment = scanner.nextDouble();
        scanner.close();
        
        // Write your code here.
        
        NumberFormat us1 = NumberFormat.getCurrencyInstance(new Locale("en", "US"));
        String us = us1.format(payment);
        
        NumberFormat india1 = NumberFormat.getCurrencyInstance(new Locale("en", "IN"));
        String india = india1.format(payment);
        
        NumberFormat china1 = NumberFormat.getCurrencyInstance(new Locale("zh", "CN"));
        String china = china1.format(payment);
        
        NumberFormat fr1 = NumberFormat.getCurrencyInstance(new Locale("sk", "SK"));
        String fr = fr1.format(payment);
        
        System.out.println("US: " +us);
        System.out.println("India: " +india);
        System.out.println("China: " +china);
        System.out.println("France: " +fr);
    }
}

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