CEB: Class quality evaluator for BlueJ

Today most programming courses for beginners use an object oriented language. This has led to many new learning tools, theories and methods for teaching object orientation. One such new tool is BlueJ which is developed to teach Java and object orientation for beginners. BlueJ does not have any support for quality evaluation for program and this paper describes the development of "CEB", a BlueJ extension for class quality evaluation based on the CK metrics. The CEB is developed as a plug-in for BlueJ and designed to be used at hand by Java programming beginners. This paper presents the BlueJ and its extensions, and describes the design and implementation of the CEB.