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CSE 4361: SOFTWARE DESIGN PATTERNS Homework 1 solved

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1 What To Do
This homework requires the student to design a simple application implemented in Java by applying the controller pattern, the iterator pattern and the composite pattern. When the application starts, it displays a
window containing two buttons and a drawing area. The buttons are labeled “Circle” and “Box,” respectively.
When one of the buttons is clicked and then the mouse is pressed in the drawing area, the corresponding shape
is added to the collection of shapes of the composite. Moreover, all the shapes stored in the composite are
repainted on the drawing area. Figure 1 shows a sample window with a circle and a box created.

Figure 1: Sample window with a circle and box created
2 What to Produce and Submit
The student is required to produce and submit the following:
1. Produce and submit a domain model class diagram (DMCD) for the simple application. The DMCD may
contain only a few class but this is fine for this homework.
2. Produce and submit a design sequence diagram for the simple use case of the application. The design sequence diagram must apply the controller pattern, the iterator pattern and the composite pattern. It must
also clearly separate the presentation (i.e., the graphical user interface) and the business objects. That
is, all business-object related processing must take place in the business-object layer, not the presentation
layer. Use UML stereotype or UML note to show the patterns you apply.
3. Produce and submit a design class diagram for the simple application. Use UML stereotype or UML note
to show the patterns you apply.
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4. Implement the design in Java. You may use Swing or AWT, whichever you prefer. Provide comments in
your code to show the patterns you apply.
5. Compile and run your application. Add a circle, a box, another circle, and another box. Produce and
submit the screen shot.
3 How To Submit
To be announced by the TA before the deadline.
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