diff -r 251d0ed461fb -r 58ec6da75f6f task4/solution02/src/org/apidesign/apifest08/currency/Convertor.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/task4/solution02/src/org/apidesign/apifest08/currency/Convertor.java	Sat Oct 11 23:38:46 2008 +0200
@@ -0,0 +1,18 @@
+package org.apidesign.apifest08.currency;
+
+import java.util.Currency;
+
+
+/** 
+ * Converts currencies. To create an instance call {@link ConvertorFactory#createConvertor(Money, Money)}.
+ */
+public interface Convertor {
+	/**
+	 * Converts amount to its equivalent in the destination currency. 
+	 * @param amount 
+	 * @param destinationCurrency
+	 * @return
+	 * @throws IllegalArgumentException if currency of the amount is not supported or if it is not possible to convert it to the destination currency.
+	 */
+	public Money convert(Money amount, Currency destinationCurrency) throws IllegalArgumentException;
+}