The Factory design pattern was very straight$-$forward. This assignment's design pattern, Adapter, is also straight$-$forward.

The "Adapter" design pattern is:

Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces. $($From Design Patterns: Elements of Reusable Object$-$Oriented Software book.$)$

Various programming languages make use of the Iterator design pattern:

To provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation. $($From Design Patterns: Elements of Reusable Object$-$Oriented Software book.$)$

Dr$.$ X is involved in a project with you and has written code. Although Dr$.$ X said he was good with Java, familiarity was more with C and C$++$ than Java. Dr$.$ X wrote the following code:

CppIterator.java

SillyArray.java

Except for the Iterator iterator$()$ function stub which has been added for your convenience. $($This assignment has you writing the code, described below for that function.$)$

Program.java

NOTE: After the code your write in SillyArray works the last loop's code will work.

$($see links later on this page to those files$).$ When you first ran Dr$.$ X$\text{'}$ code is run, it outputs: