Multi Currency Money [springframeworkguru#26. Times method refactoring]

Author: gechulim

src/test/java/guru/springframework/Dollar.java

@@ -5,7 +5,4 @@ public Dollar(int amount, String currency) {
         super(amount, currency);
     }
 
-    public Money times(int multiplier) {
-        return Money.dollar(this.amount * multiplier);
-    }
 }

src/test/java/guru/springframework/Franc.java

@@ -6,7 +6,7 @@ public Franc(int amount, String currency) {
     }
 
     public Money times(int multiplier) {
-        return Money.franc(this.amount * multiplier);
+        return new Money(this.amount * multiplier, this.currency);
     }
 
 }

src/test/java/guru/springframework/Money.java

@@ -1,6 +1,6 @@
 package guru.springframework;
 
-public abstract class Money {
+public class Money {
     protected int amount;
     protected String currency;
 
@@ -14,7 +14,9 @@ protected String currency() {
         return currency;
     }
 
-    public abstract Money times(int multiplier);
+    public Money times(int multiplier) {
+        return new Money(this.amount * multiplier, this.currency);
+    }
 
     public static Money dollar(int amount) {
         return new Dollar(amount, "USD");
@@ -27,8 +29,15 @@ public static Money franc(int amount) {
     public boolean equals(Object o) {
         Money money = (Money) o;
         return amount == money.amount
-                && this.getClass() == money.getClass();
+                && this.currency == money.currency;
     }
 
+    @Override
+    public String toString() {
+        return "Money{" +
+                "amount=" + amount +
+                ", currency='" + currency + '\'' +
+                '}';
+    }
 
 }