This article shows you a few ways to generate the serialVersionUID for serialization class.
1. serialver
JDK has a built-in command serialver to generate a serialVersionUID automatically.
In this example, we use serialver to generate a serialVersionUID for an Address class.
Terminal
$ serialver Address
Address: static final long serialVersionUID = -687991492884005033L; 2. Eclispe IDE
For Eclipse IDE, move the mouse over the serialization class, or click on the serialization class and press CTRL + 1.
3. Intellij IDEA
Unlinke Eclipse IDE, we need to enable the auto generate serialVersionUID option manually.
In IntelliJ IDEA, we need to enable this auto-generate serialVersionUID option manually.
P.S Tested with IntelliJ IDEA 2019.3.4, it should work the same in other versions.
Intellij IDEA Settings
File -> Settings -> Editor -> Inspections -> Java -> Serialization issues:
Find serialization class without serialVersionUID and check it.
Back to the editor, clicks on the class name, ALT + ENTER (Windows), it will prompts the Add serialVersionUID field option.
A new serialVersionUID is auto-generated.
public class Address implements Serializable {
private static final long serialVersionUID = -2338626292552177485L;
}4. 1L
Puts serialVersionUID=1L; It should be sufficient in most cases.
private static final long serialVersionUID = 1L;Further Reading
What is serialVersionUID