Practice Concurrent Collections - 4.6 | 4. Java Collections Framework (Advanced | Advance Programming In Java
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

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

4.6 - Concurrent Collections

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.

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the main advantage of using ConcurrentHashMap?

💡 Hint: Think about how it manages multiple threads.

Question 2

Easy

What does CopyOnWriteArrayList do when a new element is added?

💡 Hint: Consider how memory management works in this implementation.

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 primary feature of ConcurrentHashMap?

  • Only allows single-threaded operations
  • Allows concurrent modifications
  • Requires full locking

💡 Hint: Think about how this map helps in a multi-threaded environment.

Question 2

Truth or False: CopyOnWriteArrayList allows concurrent writes to the list without any modifications.

  • True
  • False

💡 Hint: Consider how modifications affect the data structure.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design a multi-threaded application using ConcurrentHashMap to track sales in a retail environment, explaining how you handle updates and ensure consistency.

💡 Hint: Think about how to represent sales data in terms of keys and values.

Question 2

Create a scenario where using CopyOnWriteArrayList improves application performance, then explain how you would implement this in code.

💡 Hint: Consider how often users interact with your application.

Challenge and get performance evaluation