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A serialVersionUID field is defined where it is not expected.
Serialization allows one to dump an object into a file and recover (deserialize) it later. For this to work, Java requires the class of the object to implement the java.io.Serializable interface. Moreover, all instance non-transient fields of the class must be serializable themselves. For inner non-static classes, also the outer class must be serializable. In order to distinguish dumps of objects for distinct versions of the same class, it is required that serializable classes define a static field containing the serial version of the class.
| Class Name | Unexpected Serial Version Field (Java) | |||
|---|---|---|---|---|
| Significance | reliability | |||
| Mnemonic | JAVA.CLASS.SER.UIDU | |||
| Categories |
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| Availability | Available for Java and Kotlin. |
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| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="Unexpected Serial Version Field (Java)" |
Guarantee that all instance non-transient fields of a serializable class are themselves serializable. Make inner serializable classes have a serializable outer class, or make them static. Add a long serialVersionUID field to serializable classes.
The following configuration file parameters affect checks for this warning class.
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