/*
**********************************************************************
* Copyright (c) 2003, International Business Machines
* Corporation and others. All Rights Reserved.
**********************************************************************
* Author: Mark Davis
* Created: May 22 2003
* Since: ICU 2.6
**********************************************************************
*/
package com.ibm.icu.dev.demo.number;
import com.ibm.icu.util.Currency;
import com.ibm.icu.text.NumberFormat;
import com.ibm.icu.text.DecimalFormat;
import com.ibm.icu.text.DecimalFormatSymbols;
import com.ibm.icu.impl.Utility;
import java.util.Locale;
import java.util.Map;
import java.util.HashMap;
/**
* Demonstration code to illustrate how to obtain ICU 2.6-like currency
* behavior using pre-ICU 2.6 ICU4J.
* @author Mark Davis
*/
public class CurrencyDemo {
public static void main(String[] args) {
testFormatHack(true);
}
static NumberFormat getCurrencyFormat(Currency currency,
Locale displayLocale,
boolean ICU26) {
// code for ICU 2.6
if (ICU26) {
NumberFormat result = NumberFormat.getCurrencyInstance(displayLocale);
result.setCurrency(currency);
return result;
}
// ugly work-around for 2.4
DecimalFormat result = (DecimalFormat)NumberFormat.getCurrencyInstance(displayLocale);
HackCurrencyInfo hack = (HackCurrencyInfo)(hackData.get(currency.getCurrencyCode()));
result.setMinimumFractionDigits(hack.decimals);
result.setMaximumFractionDigits(hack.decimals);
result.setRoundingIncrement(hack.rounding);
DecimalFormatSymbols symbols = result.getDecimalFormatSymbols();
symbols.setCurrencySymbol(hack.symbol);
result.setDecimalFormatSymbols(symbols);
return result;
}
static Map hackData = new HashMap();
static class HackCurrencyInfo {
int decimals;
double rounding;
String symbol;
HackCurrencyInfo(int decimals, double rounding, String symbol) {
this.decimals = decimals;
this.rounding = rounding;
this.symbol = symbol;
}
}
static {
hackData.put("USD", new HackCurrencyInfo(2, 0, "$"));
hackData.put("GBP", new HackCurrencyInfo(2, 0, "\u00A3"));
hackData.put("JPY", new HackCurrencyInfo(0, 0, "\u00A5"));
hackData.put("EUR", new HackCurrencyInfo(2, 0, "\u20AC"));
}
/**
* Walk through all locales and compare the output of the ICU26
* currency format with the "hacked" currency format.
* @param quiet if true, only display discrepancies. Otherwise,
* display all results.
*/
static void testFormatHack(boolean quiet) {
String[] testCurrencies = {"USD","GBP","JPY","EUR"};
Locale[] testLocales = NumberFormat.getAvailableLocales();
for (int i = 0; i < testLocales.length; ++i) {
// since none of this should vary by country, we'll just do by language
if (!testLocales[i].getCountry().equals("")) continue;
boolean noOutput = true;
if (!quiet) {
System.out.println(testLocales[i].getDisplayName());
noOutput = false;
}
for (int j = 0; j < testCurrencies.length; ++j) {
NumberFormat nf26 = getCurrencyFormat(Currency.getInstance(testCurrencies[j]), testLocales[i], true);
String str26 = nf26.format(1234.567);
if (!quiet) {
System.out.print("\t" + Utility.escape(str26));
}
NumberFormat nf24 = getCurrencyFormat(Currency.getInstance(testCurrencies[j]), testLocales[i], false);
String str24 = nf24.format(1234.567);
if (!str24.equals(str26)) {
if (noOutput) {
System.out.println(testLocales[i].getDisplayName());
noOutput = false;
}
if (quiet) {
System.out.print("\t" + Utility.escape(str26));
}
System.out.print(" (" + Utility.escape(str24) + ")");
}
}
if (!noOutput) {
System.out.println();
}
}
}
}