inheritance - Making Child classes as Non Serializable in java

Question

I have a class which implements Serializable. Now I extends this class and I want this extended class to be non Serializable. So how to do it?

For example. I have

class A implements Serializable.

and I have

class B extends A.

But I want class B to be Non Serializable.

Answer 1

You can't remove the interface, but you can prevent serialization at run-time:

class B extends A {
    private void writeObject(ObjectOutputStream oos) throws IOException {
        throw new NotSerializableException();
    }
}