| With the rapid development of computer applications, networking applications continuing to expand, as well as the traditional test methods can not adapt to the needs of modern examinations, the on-line Web-based examination is more and more popular in recent years.The Java online examination system is one of these Web-based on-line examination systems.The Java online examination system achieves the purpose of the on-line examination, reduces teachers'workload,improves productivity and stimulates students'interest in learning. Systems uses the browser / server to develop.It includes log, new user registration, user management, on-line examination, comparison and implementation of the code, and other functional modules. The system not only completes the conventional examination , but also provide code uploading, compiling, running and the calculation of the code similarity comparison.The calculation of the code similarity is a basis for teachers to judge whether the code is plagiarism.Code similarity used the calculation of the main attributes of technology and counting techniques of measuring the structure of the design. The main attributes of technology includes four basic attributes, the number of operating a single-digit number, the total number of all operators, all operators of the total number; structure of the measure analysis the inner structure of programe, such as flow control.According to the structure of programe, it needs the analysis of the structure of the program, such as flow control, nested in-depth. Java code on-line examination system combines these two calculation methods, analysis the Java code and calculates the value of similarity.Various modules use UML technology to design, it uses JSP (Java Server Pages) technology and MySQL database DREAMWEAVER development tools to realize the syatem. After the design and realization, all of the functions of the system are tested ,and the calculation of the code similarity uses actual examples to test and analysis. |
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