在 Web 上，全局标识某个对象的常用方法是赋给它一个 URI。

On the Web, a common way of globally identifying an item is to give it a URI.

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通过在代码中添加调试语句来输出对象的域或者甚至于整个数据集合是一种常用的解决问题的方法。

Adding debug statements to your code to write out the fields in an object, or even entire data collections, is a common problem-solving approach.

youdao

可能最常用到的是reset方法，DocumentBuilder和SAXParser都添加了这个方法，从而使对象返回到默认状态。

Possibly the most generally useful involve the reset method, which has been added to both DocumentBuilder and SAXParser to permit these objects to be returned to their default state.

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