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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a Collection in Java?
💡 Hint: Think of it as a container.
Question 2
Easy
Name two core interfaces of the Java Collections Framework.
💡 Hint: Consider common data structures.
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 does a Collection in Java do?
- Stores single items only
- Groups multiple elements into a single unit
- Only allows unique items
💡 Hint: Think of it like a box containing many items.
Question 2
True or False: A List cannot contain duplicate elements.
- True
- False
💡 Hint: Consider an example where you can have the same object multiple times.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Design a program that demonstrates the use of List, Set, and Map. Create a List to hold your favorite movies, a Set for unique genres, and a Map where the keys are movie titles and values are their release years.
💡 Hint: Use ArrayList for movies, HashSet for genres, and HashMap for storing titles and years.
Question 2
Explain the advantages of using the Set interface over List when handling a collection of user IDs in an application.
💡 Hint: Consider what happens if a user enters their ID multiple times.
Challenge and get performance evaluation