15.1 - The Java Collections Framework Overview
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Practice Questions
Test your understanding with targeted questions
What is a Collection in Java?
💡 Hint: Think of it as a container.
Name two core interfaces of the Java Collections Framework.
💡 Hint: Consider common data structures.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a Collection in Java do?
💡 Hint: Think of it like a box containing many items.
True or False: A List cannot contain duplicate elements.
💡 Hint: Consider an example where you can have the same object multiple times.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
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.
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.
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