ZCW-Money-Converter-BlueJ/CurrencyConverter.java

import java.util.HashMap;

public class CurrencyConverter {
    HashMap<String, Double> rates = new HashMap<>();
    
    public CurrencyConverter() {
        rates.put("USD", 1.00);
        rates.put("EUR", 0.94);
        rates.put("GBP", 0.82);
        rates.put("INR", 68.32);
        rates.put("AUS", 1.35);
        rates.put("CAN", 1.32);
        rates.put("SGD", 1.43);
        rates.put("CHF", 1.01);
        rates.put("MYR", 1.01);
        rates.put("YEN", 1.01);
        rates.put("CNY", 6.92);
    }
    
    public double convertTo(String base, String convert, double value) {
        double baseRate = rates.get(base);
        double convertRate = rates.get(convert);
        double usdRate = rates.get("USD");
        double result = 0;
        if (baseRate <= usdRate) {
            double usd = value / baseRate;
            result = usd * convertRate;
        } else {
            double usd = value * baseRate;
            result = usd * convertRate;
        }
        return result;
    }
}