KT.SERIAL_VERSION_U_I_D_IN_SERIALIZABLE_CLASS

Serializable class does not declare a correct serialVersionUID

Classes which implement the Serializable interface should also correctly declare a serialVersionUID. This rule verifies that a serialVersionUID was correctly defined.

Noncompliant Code

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class IncorrectSerializable : Serializable {

    companion object {
        val serialVersionUID = 1 // wrong declaration for UID
    }
}

Compliant Code

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class CorrectSerializable : Serializable {

    companion object {
        const val serialVersionUID = 1L
    }
}