问题描述
当类在Eclipse中实现Serializable时，我有两个选项：添加默认 serialVersionUID（1L）或生成 serialVersionUID（3567653491060394677L）。我认为第一个更酷，但很多时候我看到人们使用第二个选项。有没有理由生成 long serialVersionUID ？
When class implements Serializable in Eclipse, I have two options: add default serialVersionUID(1L) or generated serialVersionUID(3567653491060394677L). I think that first one is cooler, but many times I saw people using the second option. Is there any reason to generate long serialVersionUID?
推荐答案
至于我可以说，这只是为了与以前的版本兼容。这只有在您之前忽略使用serialVersionUID，然后进行了一项您知道应该是但会导致序列化中断。
As far as I can tell, that would be only for compatibility with previous releases. This would only be useful if you neglected to use a serialVersionUID before, and then made a change that you know should be compatible but which causes serialization to break.
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