20.9. Serializing Collections and Arrays

Try these first

1. 1.

   What interface must be implemented by custom objects to enable serialization?

   Hint

   Think about the keywords we've discussed related to serialization.

2. 2.

   Name a Java collection that is serializable.

   Hint

   Recall the collection types we've covered.

3. 3.

   What must custom objects within a serializable collection implement?

   • Cloneable
   • Serializable
   • Externalizable

   Hint

   Think about the specific interface we discussed.

4. 4.

   True or False: The HashMap collection in Java cannot be serialized.

   • True
   • False

   Hint

   Recall the collections we mentioned during the session.

5. 5.

   Design and serialize a class that contains a List of custom objects, then demonstrate understanding of serialization limitations.

   Hint

   Focus on real-world implications of serialization in application design.

6. 6.

   Explain and demonstrate the process of how to serialize a collection containing nested objects. Identify any issues that may arise.

   Hint

   How do nested relationships affect serialization requirements?