10/14 開発課題

Item.java

@@ -0,0 +1,15 @@
+package misson1014;
+
+public class Item {
+    String name;
+    int price;
+    int stock;
+
+    void sell(int amount) {
+        this.stock = this.stock - amount;
+    }
+
+    int totalPrice() {
+        return this.price * this.stock;
+    }
+}