问题
Is there any viable reason why serialVersionUID field is not named SERIAL_VERSION_UID?
According to the docs for java.io.Serializable:
A serializable class can declare its own serialVersionUID explicitly by declaring a field named "serialVersionUID" that must be static, final, and of type long:
ANY-ACCESS-MODIFIER static final long serialVersionUID = 42L;
While referring Java Naming Conventions all static final (constants) fields should be capitilized having its fragments separated with an underscore.
回答1:
Probably because serialVersionUID was defined in the Java serialization API before such conventions existed.
I found a document published by Sun in 1997 called Java Code Conventions that says in Section 9 on page 16 "The names of variables declared class constants and of ANSI constants should be alluppercase with words separated by underscores (“”)."_
So my guess is that Sun just didn't enforce their own standards on their own code.
来源：https://stackoverflow.com/questions/8836369/serialversionuid-naming-convention