Coupling and Cohesion Measures in Object Oriented Programming

Many coupling and cohesion measures have been introduced in various surveys to identify and measure the design complexity of object oriented systems.A large numbers of metrics have been built and proposed for measuring properties of object-oriented software such as size, inheritance, cohesion and coupling.The coupling is an important aspect in the evaluation of reusability and maintainability of components or services. The coupling metrics find complexity between inheritance and interface programming. In this paper presents measurements of object after that find the coupling and cohesion between objects, measure the association between numbers of classes, check thedirect dependencies, indirect dependencies, IO dependencies,number of out and in metrics in object oriented programming. A measurement is performing between inheritance and interface programs. This paper also proposes a model to measure the degree of coupling and cohesion due to these dependencies. Keywords—Design Metrics,Class Cohesion Metrics, Cohesion among Methods of a Class, Class Coupling Metrics, Direct dependencies, indirect dependencies.