在早期版本中，您必须显式创建和初始化所有的嵌套业务对象，然后才能设置属性。

In previous versions, before you could set a property, you had to explicitly create and initialize all nested business objects.

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在加载properties对象之后，关闭输入流，然后设置布尔型标志变量(init)值为true，确定AddressStore对象已经被初始化。

After loading the Properties object, you close the input stream, and then set your Boolean flag variable (init) value to true, demarcating that the AddressStore object has been initialized.

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在设置任何属性之前，需要通过调用 pthread_attr_init() 来初始化这个对象。

This object needs to be initialized by the call pthread_attr_init() before any attributes are set. The attribute object is destroyed using the call pthread_attr_destroy()

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