Can NetBeans generate an automatic serial version ID for a Java class?

java netbeans serialversionuid
Thomas Owens picture Thomas Owens · Sep 3, 2009 · Viewed 21.1k times · Source

I would like to remove some warnings for some classes by generating an automatic serial version ID. In Eclipse, this is trivial to do - the IDE can generate one automatically and add it to the class. However, I don't see this functionality in NetBeans. Is it available? If so, where is it? If not, is there a plugin that can enable it?

Answer

lapo picture lapo · Sep 3, 2009

Actually my solution to that "problem" was to deactivate that warning in my project configuration (I use Eclipse but I guess for NetBeans is the same) as IMHO it's a wrong warning: not having a serialVersion is the safest choice because the JVM calculates one that is unique on launch (something like the hash of the class) while adding it explicitly then burdens you to take care to update it if and only if you made incompatible changes to your code.

So, if you do not care about that, it's better to avoid that value (this way it's only compatible with version that are compatible for sure, but with some false-positives: it thinks that's not compatible, but in fact it would) instead of putting there a fixed value that you would (probably, in my case) forget to update when needed, leading to actual validity errors (false-negatives: it thinks that it is compatible but it is not).

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