In Java files like “JoinMsg.java” (package: org.peerfact.impl.overlay.dht.pastry.base.messages) I find a variable:
private static final long serialVersionUID = -7372693081066186219L;
What is the meaning / use of this variable?
Reason of this question:
I want to add some new message types to the message package of Pastry.
Does every new message type I create need such a serialVersionUID?
If yes, how should I choose / determine it’s value?
Best regards