To begin, we define a Shape class hierarchy.
我们从定义一系列的Shape(形状)类开始。
The shape class hierarchy is defined in a shapes package.
类shape的继承结构在shapes包(package)中定义。
Shape是一个抽象类。
The Operations signature should show in the LogHelper class shape, as shown in Figure 30.
操作标记应当显示在loghelper类的外形中，如图30所示。
The methods of the Face class access the properties of the corresponding shape.
face类的方法访问相应形状的属性。
Click the type's shape on a class diagram.
在类图上单击类型的形状。
On the class diagram, select the type shape you want to remove from the diagram.
在类图上，选择想要从关系图中移除的类型形状。
On the class diagram, select the type shape you want to remove from the diagram.
在类图上，选择想要从关系图中移除的类型形状。
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