Playing with collections and generics

Collections are not new for us, as we went through and discussed non-generic collections on day five. So, we also have generic collections. In this section, we will discuss all about collections and generics with the use of code examples.

Understanding collection classes and their usage

As discussed on day five, collection classes are specialized classes and are meant for data interaction (storage and retrieval). We have already discussed various collection classes, namely stacks, queues, lists, and hash tables, and we have written code using the System.Collections.NonGeneric namespace. The following table provides us an overview of the usage and meaning of non-generic collection classes:

Property	Description	Usage
ArrayList	The name itself describes that this contains a collection of ordered collection that can be accessed using index. We can declare ArrayList as follows:ArrayList arrayList = new ArrayList();	On day two, we discussed arrays and went through...