How to generate serialVersionUID for Serializable?

Question

I have a class A that extends another class B that implements Serializable interface. I want to automatically generate the serialVersionUID for class A using the Eclipse.

If class A was the class that implements Serializable Eclipse will have a error compilation. Please help me generate it automatically.

class A

public class QueryOptionModel extends BaseModelData {
}

class b - gxt api

public class BaseModelData implements ModelData, Serializable

• home: Please provide some further details - which error do you receive?
• Adi Mor: i don't receive that's the prob
• tartak: When your class's parent class extends a serializable class, |Eclipse asks you (warning) to provide a serialVersionUID. I don't get your problem
• Adi Mor: the problem is that eclipse didn't ask me to provide a serialVersionUID

Answer 1

If you have a class which implements Serializable interface but doesn't specify a serialVersionUID, you'll get a warning. You can automatically ask Eclipse to fix that warning by clicking on the balloon which pops up on that line. Make sure you don't generate a random but a logical serialVersionUID i.e. 0 or 1 if this is the first draft of your serilizable class.

• Adi Mor: but my class extent a class that implement a the Serializable, and don't show the warning
• Sanjay T. Sharma: I think you should post the code you are using. I do get a warning on my stock Eclipse installation.
• Uli: Probably your compiler settings ignore this. You can change this in Eclipse: Open the properties of your project, select Java Compiler => Errors/Warnings and set the item Serializable class without serialVersionUID to Warning or Error.