It’s using the template for any eclipse-generated field. You can change it in Preferences -> Java -> Code Style -> Code Templates -> Comments -> Fields … either globally or per-project.
serialVersionUID is a field to define the version of a particular class while seriializing & deseriializing.. consider a scenario where you have a class Employee which has 3 fields which has been in production for some time (meaning there may exist many serialized versions of employee objects), when you update the class to include (say … Read more
This is because the root class for all exceptions, Throwable implements the Serializable interface. All exceptions by default are serializable and that’s a language design decision because the authors wanted exceptions to be capable of being sent across the wire without any special configuration. If the base class is not serializable, you would have a … Read more
The serialVersionUID is provided to determine compatibility between a deseralized object and the current version of the class. As such, it isn’t really necessary in the first version of a class, or in this case, in an abstract base class. You’ll never have an instance of that abstract class to serialize/deserialize, so it doesn’t need … Read more
I don’t know Java best practices, but it occurs to me that if you are claiming that serialization will never happen, you could add a writeObject method which throws. Then suppress the warning, safe in the knowledge that it cannot possibly apply to you. Otherwise someone might in future serialize your object through the parent … Read more
As far as I can tell, that would be only for compatibility with previous releases. This would only be useful if you neglected to use a serialVersionUID before, and then made a change that you know should be compatible but which causes serialization to break. See the Java Serialization Spec for more details.
From the javadoc: The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization. If the receiver has loaded a class for the … Read more
The docs for java.io.Serializable are probably about as good an explanation as you’ll get: The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect … Read more