类层次结构如图11所示。

See the class hierarchy shown in figure 11.

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坏习惯：不使用类层次结构。

Bad habit: Not using class hierarchies.

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这是我的类层次结构的屏幕截图。

Here is the screen shot of my Class hierarchies.

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从一个抽象的类层次结构得到正确的场？

Get the right field from an abstract class hierarchy?

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显然，要修复这个问题，必须避免循环的类层次结构。

Obviously, to fix this problem, you must avoid the cyclic class hierarchy.

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类层次结构中的每一类型都具有一定的契约关系。

Every single one of those types in the hierarchy has a contract.

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此类优化的另一个重要的例子是基于类层次结构的优化。

Another important example of this kind of optimization is class-hierarchy-based optimization.

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业务域驱动类的层次结构的一个简单例子。

A simple example of a business domain-driven class hierarchy.

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因此，请尽量避免将任何类或层次结构放入project或home目录。

Thus, try to avoid putting any classes or hierarchies into your project or home directory.

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接口不是类的层次结构的一部分，虽然他们结合班工作。

Interfaces are not part of the class hierarchy, although they work in combination with classes.

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接口不是类的层次结构的一部分，虽然他们结合班工作。

Interfaces are not part of the class hierarchy, although they work in combination with classes.

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