我最近读到一条评论说从 Java 5 开始不再需要使用 serialVersionUID 来使同一类的不同版本兼容序列化/反序列化。它是否正确？也许它与协变返回类型混淆了。所以想和大家一起检查一下。
最佳答案
JavaDocs for Java 5仍然声明需要它:
If a serializable class does not explicitly declare a serialVersionUID, then the serialization runtime will calculate a default serialVersionUID value for that class based on various aspects of the class, as described in the Java(TM) Object Serialization Specification. However, it is strongly recommended that all serializable classes explicitly declare serialVersionUID values, since the default serialVersionUID computation is highly sensitive to class details that may vary depending on compiler implementations, and can thus result in unexpected InvalidClassExceptions during deserialization. Therefore, to guarantee a consistent serialVersionUID value across different java compiler implementations, a serializable class must declare an explicit serialVersionUID value. It is also strongly advised that explicit serialVersionUID declarations use the private modifier where possible, since such declarations apply only to the immediately declaring class--serialVersionUID fields are not useful as inherited members.
关于java - 从 Java 5 开始不再需要 serialVersionUID？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/7385049/