CS 110 Notes Classes III 1
Copyright C. Tanner 2009
• Class
o Standalone entity
o Object
o Application class
Driver of program
Contains main method
o Worker or support classes
Reusable elements
Model real world entities
o Decompose problem into series of classes
• Class is made up of
o Data
Data members
o Operations
Act upon the data
Member functions
o Encapsulate them into one object – class
Provide a mechanism to “hide” data members from other classes
• Isolates data member from unauthorized change
• Private
Provide operations to modify and return data members
o Class definition
Modifer(s) class ClassName modifer(s)
{
Data members/fields
Member methods
}
• Data members/fields
o Constant declarations
o Variable declarations
• Member methods
o Automatically have access to the data members and constants
o Direct access, scope
o Can use other class member methods
• Modifiers
o Determine the accessibility of class members
o Private
Can only be accessed by other class members
o Public
Anyone/code can access it
• Data member declares
o Visibility dataType identiferName [=value]
• Member method declare
o Visibility method header
