Third, create a ViewSimple class that extends JFrame, implements the ModelListener interface, and has the following UML specification: Third, create a ViewSimple class that extends JFrame, implements the ModelListener interface, and has the following UML specification:
时间: 2023-11-28 10:48:20 浏览: 95
the-java-graphics--sharpening.zip_The Class_图像锐化
Sure, here's a possible UML specification for the ViewSimple class:
```
+---------------------------------+
| ViewSimple |
+---------------------------------+
| - model: Model |
| - textArea: JTextArea |
+---------------------------------+
| + ViewSimple(model: Model) |
| + update() |
+---------------------------------+
| ModelListener |
+---------------------------------+
| + updateView() |
+---------------------------------+
```
In this UML specification, `ViewSimple` is a subclass of `JFrame` and implements the `ModelListener` interface. It has two private fields: `model`, which is an instance of the `Model` class (not shown in this UML diagram), and `textArea`, which is a `JTextArea` where the view can display information.
The `ViewSimple` class has a constructor that takes a `model` parameter and sets up the user interface. It also has a public method `update()` that will be called by the `Model` class whenever its state changes. This method updates the `textArea` with the latest information from the `Model`.
Finally, the `ModelListener` interface is shown in the diagram as a separate class. This interface has a single method `updateView()` that will be called by the `Model` class whenever its state changes. The `ViewSimple` class implements this interface to receive notifications about changes in the `Model`.
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