1. Composite Pattern

   Name in Design Pattern

   Actual Name

   Primitive

   LineItem

   Composite

   Bundle

   Leaf

   Product

   method()

   getPrice()

2. Decorator Pattern

   Name in Design Pattern	Actual Name
   Component	LineItem
   ConcreteComponent	Product
   Decorator	DiscountedItem
   method()	getPrice()

3. Observer Pattern

   Name in Design Pattern	Actual Name
   Subject	Invoice
   Observer	ChangeListener
   ConcreteObserver	Anonymous class that implements ChangeListener
   attach()	addChangeListener()
   notify()	stateChanged()

4. Iterator Pattern

   Name in Design Pattern	Actual Name
   Aggregate	None
   ConcreteAggregate	Invoice
   Iterator	Iterator
   ConcreteIterator	Anonymous class that implements Iterator
   createIterator()	getItems()
   next()	next()
   isDone()	hasNext()
   currentItem()	Not implemented

5. Strategy Pattern

   Name in Design Pattern	Actual Name
   Context	Invoice
   Strategy	InvoiceFormatter
   ConcreteStrategy	SimpleFormatter
   doWork()	formatHeader() formatLineItem() formatFooter()