例如，一个类可能会打开一个流，并将其传递给另一个类以阅读来自文件的信息。

For example, one class may open a stream and pass it to another class to read information from a file.

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清单3展示了打开一个连接并从流中读取数据的一种方法。

Listing 3 illustrates one way to open a connection and read data through a stream.

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清单3展示了打开一个连接并从流中读取数据的一种方法。

Listing 3 illustrates one way to open a connection and read data through a stream.

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