The JVM records this signature information when loading a class and makes it available at run time using reflection.
JVM在装载类时记录这个签名信息，并在运行时通过反射使它可用。
Reflection gives you run-time access to a variety of class information.
反射使您能够运行时接入广泛的类信息。
A parameterized class lets you base a recordset query on information obtained or calculated at run time.
参数化类使您可以根据运行时获取或计算的信息创建记录集查询。
A parameterized class lets you base a recordset query on information obtained or calculated at run time.
参数化类使您可以根据运行时获取或计算的信息创建记录集查询。
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