Method logic explanation

Hi

As per the following MSDN link 

http://msdn.microsoft.com/en-us/library/ms182146(v=vs.80).aspx 

The method named UseTheSimplifiedClass has the following statement

ReplyData[] answer = new ReplyData[5];

The ReplyData class isnt an array or collection however the syntax is used as if it is?

Regards

Steven