java对南非货币使用“R”而不是“ZAR”

Question

当地区设置为南非时，如何使用“R”表示货币

现在它显示“ZAR”，我需要它显示“R”

我试过：

final Currency curr = Currency.getInstance("ZAR");
final NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.getDefault());
nf.setCurrency(curr);
final String value = nf.format(12345.67);

一旦所有这些都完成了，我用R代替了ZAR。替换（）

Answer 1

NumberFormat类根据作为参数传递的区域设置来格式化数字。如果语言环境是南非（new Locale("en", "ZA")），则数字将正确显示：R 12345.67

final Currency curr = Currency.getInstance("ZAR");
final NumberFormat nf = NumberFormat.getCurrencyInstance(new Locale("en", "ZA"));
nf.setCurrency(curr);
final String value = nf.format(12345.67);
System.out.println(value);

Answer 2

我发现了一个很好的例子：

      public static SortedMap<Currency, Locale> currencyLocaleMap;
  static {
    currencyLocaleMap = new TreeMap<Currency, Locale>(new Comparator<Currency>() {
      public int compare(Currency c1, Currency c2){
        return c1.getCurrencyCode().compareTo(c2.getCurrencyCode());
      }
    });
    for (Locale locale : Locale.getAvailableLocales()) {
      try {
        Currency currency = Currency.getInstance(locale);
        currencyLocaleMap.put(currency, locale);
      }catch (Exception e){
      }
    }
  }

  public static String getCurrencySymbol(String currencyCode) {
    Currency currency = Currency.getInstance(currencyCode);
    System.out.println( currencyCode+ ":-" + currency.getSymbol(currencyLocaleMap.get(currency)));
    return currency.getSymbol(currencyLocaleMap.get(currency));
  }

从这里：Not getting currency symbols for specific Locale

Answer 3

构建自己的NumberFormat类（扩展Java的），并实现自己的format版本；为除ZAR之外的所有货币调用基类函数

您当前采用的方法往往会导致大量重复（和未封装）的代码