[[Object-oriented programming|Object-oriented programming languages]] contain the concept of classes[[Class (computer science)|class]]es, which allow data and functions to be grouped together., Variablesand stored within objects[[Object (alsocomputer called [[propertiesscience)|object]])s canwhere bea consideredclass staticis variables,instantiated. astheirStatic valuevariables isin retainedthis overcontext theare entirethose lifewhich ofapply to the objectclass, not just wheneach object functions are being calledinstance.