4.1 - Deep Dive into Collection Interfaces
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Practice Questions
Test your understanding with targeted questions
What are the four main types of collections in Java?
💡 Hint: Think about common collection usages.
What is an ArrayList?
💡 Hint: Consider how it stores data.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
Which of the following collections allows duplicate elements?
💡 Hint: Think about how these collections store items.
True or False: A TreeMap can have null keys.
💡 Hint: Consider how ordering affects nulls.
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Challenge Problems
Push your limits with advanced challenges
You need to create a shopping cart in an e-commerce application. Which collection would you choose to store items and why?
💡 Hint: Consider the operations you need to perform.
Assuming a banking system requires uniqueness in account numbers and needs to maintain their order, which collections would best suit this requirement?
💡 Hint: Think about uniqueness and order.
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Reference links
Supplementary resources to enhance your learning experience.