Question

How an object can become serializable?

(a) If a class implements java.io.Serializable class

(b) If a class or any superclass implements java.io.Serializable interface

(c) Any object is serializable

(d) No object is serializable

I have been asked this question by my school principal while I was bunking the class.

Enquiry is from Serialization in division Serialization & Networking of Java

Answer 1

The correct choice is (b) If a class or any superclass implements java.io.Serializable interface

To explain I would say: A Java object is serializable if class or any its superclass implements java.io.Serializable or its subinterface java.io.Externalizable.