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jdbc-mysql的datetime 类型读取之后为什么多一个.0

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Release： 2016-06-06 09:41:49
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mysqljdbc数据库机

mysql的datetime类型YYYY-MM-DD HH:MM:SS java读取之后为什么多一个.0
比如在数据库中是2015-12-12 12:12:12但jdbc读取之后转成Date却是2015-12-12 12:12:12.0 里面有什么奥妙之处吗

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mysql jdbc 数据库机
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