Java Collections Framework MCQs Questions | Java Program MCQs Page-2 section-1

11.
What is the primary difference between a `HashSet` and a `LinkedHashSet` in the Java Collections Framework?

A. A `HashSet` uses a tree structure to store elements

B. A `LinkedHashSet` is synchronized, while a `HashSet` is not

C. A `LinkedHashSet` maintains insertion order, while a `HashSet` does not

D. A `HashSet` allows duplicate elements, while a `LinkedHashSet` does not

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12.
Which interface in the Java Collections Framework represents a collection of elements with no specific order?

A. `List`

B. `Map`

C. `Collection`

D. `Set`

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13.
What is the primary difference between a `Queue` and a `Deque` in the Java Collections Framework?

A. A `Queue` represents a single-ended queue, while a `Deque` represents a double-ended queue

B. A `Queue` allows duplicate elements, while a `Deque` does not

C. A `Deque` is synchronized, while a `Queue` is not

D. A `Queue` is indexed, while a `Deque` is not

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14.
Which class is typically used to implement a `Deque` in the Java Collections Framework?

A. `LinkedList`

B. `HashMap`

C. `HashSet`

D. `ArrayDeque`

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15.
In the Java Collections Framework, which class allows you to create a synchronized (thread-safe) collection?

A. `ArrayList`

B. `HashMap`

C. `Collections`

D. `HashSet`

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16.
Which interface in the Java Collections Framework extends the `Set` interface and represents a collection of elements stored in a sorted order?

A. `Map`

B. `SortedSet`

C. `Queue`

D. `Map`

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17.
What is the purpose of the `Comparator` interface in Java Collections Framework?

A. It represents a generic collection

B. It provides methods for hashing elements

C. It defines a comparison function for ordering elements

D. It represents a synchronized collection

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18.
Which class is typically used to implement a `SortedSet` in the Java Collections Framework?

A. `HashSet`

B. `LinkedHashSet`

C. `ArrayList`

D. `TreeSet`

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19.
In the Java Collections Framework, which interface represents a last-in, first-out (LIFO) stack of elements?

A. `Stack`

B. `Queue`

C. `List`

D. `Deque`

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20.
What is the primary difference between a `Stack` and a `Queue` in the Java Collections Framework?

A. A `Queue` allows duplicate elements, while a `Stack` does not

B. A `Stack` allows duplicate elements, while a `Queue` does not

C. A `Queue` uses a LIFO order, while a `Stack` uses a FIFO order

D. A `Stack` uses a LIFO (Last-In-First-Out) order, while a `Queue` uses a FIFO (First-In-First-Out) order

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Java Collections Framework MCQs Questions | Java Program MCQs

11. What is the primary difference between a `HashSet` and a `LinkedHashSet` in the Java Collections Framework?

Answer & Solution

12. Which interface in the Java Collections Framework represents a collection of elements with no specific order?

Answer & Solution

13. What is the primary difference between a `Queue` and a `Deque` in the Java Collections Framework?

Answer & Solution

14. Which class is typically used to implement a `Deque` in the Java Collections Framework?

Answer & Solution

15. In the Java Collections Framework, which class allows you to create a synchronized (thread-safe) collection?

Answer & Solution

16. Which interface in the Java Collections Framework extends the `Set` interface and represents a collection of elements stored in a sorted order?

Answer & Solution

17. What is the purpose of the `Comparator` interface in Java Collections Framework?

Answer & Solution

18. Which class is typically used to implement a `SortedSet` in the Java Collections Framework?

Answer & Solution

19. In the Java Collections Framework, which interface represents a last-in, first-out (LIFO) stack of elements?

Answer & Solution

20. What is the primary difference between a `Stack` and a `Queue` in the Java Collections Framework?

Answer & Solution

Read More Section(Collections Framework in java)

11.
What is the primary difference between a `HashSet` and a `LinkedHashSet` in the Java Collections Framework?

12.
Which interface in the Java Collections Framework represents a collection of elements with no specific order?

13.
What is the primary difference between a `Queue` and a `Deque` in the Java Collections Framework?

14.
Which class is typically used to implement a `Deque` in the Java Collections Framework?

15.
In the Java Collections Framework, which class allows you to create a synchronized (thread-safe) collection?

16.
Which interface in the Java Collections Framework extends the `Set` interface and represents a collection of elements stored in a sorted order?

17.
What is the purpose of the `Comparator` interface in Java Collections Framework?

18.
Which class is typically used to implement a `SortedSet` in the Java Collections Framework?

19.
In the Java Collections Framework, which interface represents a last-in, first-out (LIFO) stack of elements?

20.
What is the primary difference between a `Stack` and a `Queue` in the Java Collections Framework?