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我编写了一个 java 函数来显示每种货币的语言环境模式。请参阅下面的功能。我有兴趣知道的是，为什么当货币是瑞士法郎时，第二个小数点被硬编码为 5？

这是与美元和瑞士法郎货币相关的函数的输出：

Analyzing currency: [USD] localePattern: [¤#,##0.00;(¤#,##0.00)] Currency symbol [$]
Analyzing currency: [CHF] localePattern: [¤#,##0.05;(¤#,##0.05)] Currency symbol [SwF]

这是我写的java函数：

import com.ibm.icu.text.DecimalFormat; 
import com.ibm.icu.text.NumberFormat;
import com.ibm.icu.util.Currency;

public static void main(String[] args)
  {
    Currency configuredCurrency                       = null; 
    NumberFormat formatter                = NumberFormat.getCurrencyInstance();
    DecimalFormat localeCurrencyFormatter = (DecimalFormat)formatter;
    String localePattern                  = "";
    String symbol                         = "";

    String currencies        = "AED,AFN,ALL,AMD,ARS,AUD,BGN,BHD,BND,BOB,BRL,BWP,BYR,CAD,CHF,CLP,CNY,COP,CRC,CZK,DJF,DKK,DOP,DZD,EEK,EGP,ERN,ETB,EUR,GBP,GTQ,HKD,HNL,HRK,HUF,IDR,ILS,INR,IQD,IRR,ISK,JOD,JPY,KES,KPW,KRW,KWD,KZT,LBP,LTL,LVL,LYD,MAD,MKD,MTL,MXN,MYR,NIO,NOK,NZD,OMR,PAB,PEN,PHP,PKR,PLN,PYG,QAR,RON,RUB,SAR,SDD,SEK,SGD,SKK,SOS,SVC,SYP,SwF,THB,TND,TRY,TZS,UAH,USD,UYU,VEB,VND,YER,ZAR,ZWD";
    String[] currenciesArray = currencies.split(",");

    for (int i = 0; i < currenciesArray.length; i++)
    {
      String currency = currenciesArray[i];
      configuredCurrency = Currency.getInstance(currency);
      localeCurrencyFormatter.setCurrency(configuredCurrency);
      localePattern = localeCurrencyFormatter.toPattern();
      symbol = localeCurrencyFormatter.getCurrency().getSymbol();

      System.out.println("Analyzing currency: [" + currency + "] localePattern: [" + localePattern + "] Currency symbol [" + symbol + "]");
    } 
  }
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