Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What interface do we implement for custom serialization in Java?
💡 Hint: It's related to object and byte stream conversion.
Question 2
Easy
Name one method you must implement when using Externalizable.
💡 Hint: Think of writing objects to a stream.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the main purpose of the Externalizable interface?
- To provide a default way to serialize objects
- To customize serialization
- To improve performance of Serializable
💡 Hint: Think about the differences in control it provides.
Question 2
True or False: The Externalizable interface requires implementing only one method.
- True
- False
💡 Hint: Count the methods!
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a scenario where using Externalizable would yield significant performance benefits. Consider the object structure and data types involved.
💡 Hint: Think about which fields are necessary for transmission.
Question 2
Implement an Externalizable interface in a class with fields of types List and Map. Discuss any challenges and considerations regarding serialization.
💡 Hint: How do these collections serialize? Are their contents also Externalizable?
Challenge and get performance evaluation