The Java Collection Framework is a unified architecture that provides interfaces, classes, and algorithms to handle data structures like lists, sets, maps, and queues. It helps in efficiently storing, retrieving, and manipulating data in real-world applications.
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Which of the following is a root interface in the Collection hierarchy?
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Question 4 of 15
4. Question
Which interface is NOT a part of the Collection hierarchy?
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Question 5 of 15
5. Question
Which class implements both List and RandomAccess interfaces?
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Question 6 of 15
6. Question
Which class maintains key-value pairs and allows one null key?
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Question 7 of 15
7. Question
Which interface should be implemented to create a custom collection?
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Question 8 of 15
8. Question
What is the default load factor of HashMap?
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Question 9 of 15
9. Question
Which method is used to add an element to a collection?
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Question 10 of 15
10. Question
Which interface provides a queue-like structure?
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Question 11 of 15
11. Question
What is the difference between HashSet and TreeSet?
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Question 12 of 15
12. Question
Which of the following classes is synchronized?
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Question 13 of 15
13. Question
What does the size() method return in collections?
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Question 14 of 15
14. Question
Which interface extends Collection and allows duplicates?
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Question 15 of 15
15. Question
Which method removes all elements from a collection?
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Summary
The Java Collection Framework is essential for building flexible and efficient data-handling applications. It simplifies programming by offering standardized ways to work with groups of objects through powerful interfaces like List, Set, Queue, and Map.
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