Java Object Serialization Specification: 4 - Class Descriptors - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

Java Object Serialization Specification

4.2 Dynamic Proxy Class Descriptors

ObjectStreamClass descriptors are also used to provide information about dynamic proxy classes (e.g., classes obtained via calls to the getProxyClass method of java.lang.reflect.Proxy) saved in a serialization stream. A dynamic proxy class itself has no serializable fields and a serialVersionUID of 0L. In other words, when the Class object for a dynamic proxy class is passed to the static lookup method of ObjectStreamClass, the returned ObjectStreamClass instance will have the following properties:

Invoking its getSerialVersionUID method will return 0L.

Invoking its getFields method will return an array of length zero.

Invoking its getField method with any String argument will return null.

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