Context. User Interfaces (UIs) intensively rely on event-driven programming: widgets send UI events, which capture users’ interactions, to dedicated objects called controllers. Controllers use several UI listeners that handle these events to produce UI commands. Objective. The first objective of this work is to show empirical evidences that the code that describes and controls UIs can be affect...

-Software refactoring is one of the essential techniques which are used to improve the software quality without affecting any of the external functionality of the software. There were numerous of software refactoring tools and code smells detection tools which are to be automatic or semi automatic. Most of these tools were human driven, so Software refactoring depends on developers’ spontaneity...

In model-driven engineering, modeling languages are developed to serve as basis for system design, simulation and code generation. Like any software artifact, modeling languages evolve over time. If, however, the metamodel that defines the language is badly designed, the effort needed for its maintenance is unnecessarily increased. In this paper, we present bad smells and anti-patterns that we ...

Programming assignments (PAs) are very important to many computer science courses. Traditionally, the grading of a programming assignment is based mainly on the correctness of the code. However, from the view point of software engineering education, such a grading does not encourage students to develop code that is easy to read and maintain. Thus, the authors created a grading policy that consi...

Context: Code smells (CS) tend to compromise software quality and also demand more effort by developers maintain evolve the application throughout its life-cycle. They have long been catalogued with corresponding mitigating solutions called refactoring operations. Objective: This SLR has a twofold goal: first is identify main code detection techniques tools discussed in literature, second analy...

Software defect prediction is an important aspect of preventive maintenance of a software. Many techniques have been employed to improve software quality through defect prediction. This paper introduces an approach of defect prediction through a machine learning algorithm, support vector machines (SVM), by using the code smells as the factor. Smell prediction model based on support vector machi...

Context: Technical Debt (TD) discusses the negative impact of sub-optimal decisions to cope with need-for-speed in software development. Code Items (TDI) are atomic elements TD that can be observed code artefacts. Empirical results on open-source systems demonstrated how code-smells, which just one type TDIs, introduced and "survive" during release cycles. However, little is known about whether...

In this paper, we contribute to the characterisation of a programming style specific to aspect-oriented programming. For this purpose, we present a collection of refactorings for aspect-oriented source code, comprising refactorings to enable extraction to aspects of crosscutting concerns from objectoriented legacy code, the subsequent tidying up of the extracted aspects and factoring out of com...