参见每一章节代码实例中的README . txt可以获取更多细节。
See the README.txt files in each chapter's code examples for more details.
清单12中的代码实例化了purchaseorder类的两个对象。
The code in Listing 12 instantiates two objects of the PurchaseOrder class.
反射代码比相应的直接代码更复杂，正如性能比较的代码实例中看到的一样。
Reflection code is also more complex than the corresponding direct code, as can be seen in the code samples from the performance comparisons.
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