Nameserialver---Class Version Number Generator
JDK 1.1 and later.
serialver [-show] classname...
serialver displays the version number, or serialization-unique identifier, for a named class or classes. If the class declares a long serialVersionUID constant, the value of that field is displayed. Otherwise, a unique version number is computed by applying the Secure Hash Algorithm (SHA) to the API defined by the class. This program is primarily useful for computing an initial unique version number for a class, which is then declared as a constant in the class. The output of serialver is a line of legal Java code, suitable for pasting into a class definition.