Advantages of oop object oriented programming

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Unformatted text preview: uted using the instance variables of 'b' as data. Otherwise, the pointer to its super-class is followed. If it finds the method in class 'A', it executes it on the data of 'b'. Otherwise, it searches A's superclass if there is one. If 'A' has no super-class and the method has not been found, an error is reported. Procedure-oriented versus Object-oriented Programming Conventional procedure-oriented programming languages use procedural abstractions that encapsulate sequences of operations into procedures (also known as functions, subroutines, or subprograms). On the other hand, object-oriented programming languages encapsulate data as well as sequences of operations into abstract entities called objects, providing a stronger encapsulation mechanism than procedures. Hence object-oriented programming provides a more powerful modeling tool than procedure-oriented programming. Notice that both procedures and objects can be considered to be server modules that may be called by clients to get certain actions performed. However, the basic difference between the two is in their roles. The role of procedures is to transform input data specified by parameters into values, while the role of objects is to serve as a repository of data (the current system state) and to respond (perform the requested action) in a manner determined by the current system state. For example, the response of a bank to a withdrawal request depends on the value of the current balance. The procedure-oriented programming paradigm has strong organizing principles for managing actions and algorithms, but has weak organizing principles for managing shared data. Object-oriented programming paradigm has strong organizing principles both for managing actions and algorithms and for managing shared data because it provides the capability to restrict applicable operations to those associated with a specific object or class. Inheritance provides further strength to this capability by allowing classes to be classified by factoring out properties common to several sub-classes int...
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This document was uploaded on 04/07/2014.

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