update,

_resources/it114105/itp3914/Lab10/Ex4/CurrencyConverter.java

@@ -0,0 +1,48 @@
+class CurrencyConverter {
+	private double exchangeRate;
+	private double commissionRate;
+	private int largeAmount;
+ 
+	public CurrencyConverter(double er , double cr){
+		exchangeRate = er;
+		commissionRate = cr;
+	}
+ 
+	public double fromUSDollar(double dollar){
+		if (dollar >= largeAmount)
+			return (dollar * exchangeRate * (1-commissionRate*0.5));
+		else
+			return (dollar * exchangeRate * (1-commissionRate));
+	}
+ 
+	public double toUSDollar(double foreignMoney){
+		if (foreignMoney/exchangeRate >= largeAmount)
+			return (foreignMoney/exchangeRate*(1-commissionRate*0.5));
+		else
+			return (foreignMoney/exchangeRate*(1-commissionRate));
+	}
+ 
+	public void setExchangeRate(double rate){
+		exchangeRate = rate;
+	}
+ 
+	public double getExchangeRate(){
+		return exchangeRate;
+	}
+ 
+	public void setCommissionRate(double rate){
+		commissionRate = rate;
+	}
+ 
+	public double getCommissionRate(){
+		return commissionRate;
+	}
+ 
+	public void setLargeAmount(int amount){
+		largeAmount = amount;
+	}
+ 
+	public int getLargeAmount(){
+		return largeAmount;
+	}
+}