If I write a serialversionUid for my class as say 1234, and I know that no other class in my program uses that, is that fine or do i always have to use a uid generated by the compiler?
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If I write a serialversionUid for my class as say 1234, and I know that no other class in my program uses that, is that fine or do i always have to use a uid generated by the compiler?
serialVersionUID can be any long that provides a unique signature to your object for serialization and deserialization. I don’t think it even have to be unique. This is so that the serializer knows that that is the same Foo.class even after you have change the structure of the class. I typically use a -1L for the value.