Description:This document is a sample object-oriented software development of the ABC SmartSell Company payroll system. In the first section, the document talks about the requirements of the payroll system. The section focuses on what the system has to do and what the system needs. The second section is a use-case diagram that models the activities of the user with the system. This section can be called system analysis. The third section is the system design. In this section, classes, their relationships are defined and the class diagram is drawn to model the structure of the system. The attributes and operations of the classes are also defined, and the activity and communication diagrams are drawn to represent the behavior of the system. The third section is the complete Java source code of the payroll system. You can call this section system implementation. The final section is system testing. It is simply the screenshot of the output when the system runs in Eclipse.
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