static void Main(string[] args) { IDoThings myStuff = new DoStuff.DoHickey(); myStuff.DoNothing(); myStuff.DoSomething(4); myStuff.DoSomethingElse("This is a string"); myStuff = new DoStuff.DoDickey(); myStuff.DoNothing(); myStuff.DoSomething(4); myStuff.DoSomethingElse("This is a string"); }