displays the composite details and iterate over the components

has next

iterates over the components

displays the item

Encapsulation

Single creation

Abstraction

Irritation

Inheritance

Interface

Sub class

Abstract

You are coupling the implementation of the product with its use

You are are allowing multiple creators

To avoid the need to create a new class for each product

You are decoupling the implementation of the product from its use

Compile the code

Define as Strings

Add exception handling

Use static constants or enum