Enums, Singletons and Deserialization
Enums are considered best way for singletons and one of reasons for this is that it implicitly inherits Serializable .
But how enums prevents de-serialization problem of singletons?
The serialization mechanism handles them in a special, specific way. But traditional singletons can be deserialized fine by defining a readResolve() method that returns the unique instance. See http://www.oodesign.com/singleton-pattern.html for an example.
Serialization as an argument for using enum for singleton is nonsense.
If the enum singleton is stateful, the state is lost during serialization/deserialization.
If the singleton is stateless, who cares about its identity?
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