The SquizLog

serialVersionUID Performance Myth

It would appear that I have been guilty of spreading a myth about improved performance if you declare serialVersionUID in a serializable class.

As Vladimir Roubtsov pointed out a couple of years ago, declaring serialVersionUID has a neglible effect on performance. If not declared the SUID is computed only the first time the JVM serializes an object of a given class. For the curious, read Vladimir's article as well as the details of the SUID computation.

Thanks to Chuck Herrick for alerting me to this. Mea culpa!