The class would list types of such attributes and also define the actions which a person can perform : `` run '' , `` jump '' , `` sleep '' , `` walk '' , etc. .

In this example , there are three classes : NUMBER@1 -RRB- a class called `` car '' , NUMBER@2 -RRB- a class called `` pick-up truck '' , and NUMBER@3 -RRB- a class called `` vehicle '' . Although there is only one class called `` car '' , there could be many objects that are created from the class called `` car '' .
