how do I randomly generate a serialVersionUID in java?

Question

whenever I see this line of code

private static final long serialVersionUID =

it's always followed by some long serial number.. how is this number generated? If I wanted to randomly generate this value, how would I go about that? thanks for any help.

Answer 1

JDK

The JDK ships a tool called serialver. You give it a classname and it will generate a serialVersionUID for you. For example:

$serialver  java.lang.String
java.lang.String:    private static final long serialVersionUID = -6849794470754667710L;

IntelliJ

For the IntelliJ IDE, try: IntelliJ IDEA generating serialVersionUID