20.4. Deserialization

Try these first

1. 1.

   What is deserialization in Java?

   Hint

   Think about how we restore objects from storage.

2. 2.

   What Java class is used for reading serialized objects?

   Hint

   It's part of the java.io package.

3. 3.

   What is the main purpose of deserialization in Java?

   • To save an object into a byte stream
   • To reconstruct an object from a byte stream
   • To check if an object is serializable

   Hint

   Think of it like unpacking a box.

4. 4.

   True or False: An ObjectInputStream can read any Java object regardless of its serialization status.

   • True
   • False

   Hint

   Remember the requirement for serialization.

5. 5.

   You serialized an object but forgot to implement the Serializable interface. When you try to deserialize it, what will happen? Describe how you would resolve this issue.

   Hint

   Review the conditions required for a class to be serializable.

6. 6.

   In a web application, a user’s preferences are stored in a file using serialization. Describe how you would implement deserialization upon the user logging back into the application.

   Hint

   Think about user experience when reading stored data.