Day 15: Packages, Interfaces, and Other Class Features

Notes and Corrections

• None.

Source Files

• CountInstances.java
• CountInstances.class
• GiftShop.java
• GiftShop.class
• Item.java
• Item.class
• Storefront.java
• Storefront.class

Reader Questions

• None.

Activities

• Solution #1: GiftShop2.java, GiftShop2.class, Item2.java, Item2.class, Storefront2.java, and Storefront2.class.
• Solution #2: ZipCode.java and ZipCode.class.