Java-Collections
Mastering Java Collections
Test your knowledge of Java Collections Framework in this engaging quiz designed for both beginners and experienced developers. Challenge yourself with questions that cover various aspects of collections in Java.
- 10 multiple-choice questions
- Checks understanding of key interfaces and classes
- Perfect for brushing up on Java collections
1-Which of these is not a interface in the Collections Framework?
A-Collection
B-Group
C-Set
D-List
2-Which interface restricts duplicate elements?
A-Set
B-List
C-Map
D-(All of these)
3-Which of these collection class has the ability to grow dynamically?
A-Array
B-Arrays
C-ArrayList
D-(None of these)
4-What implementation of Iterator can traverse a collection in both directions?
A-Iterator
B-ListIterator
C-SetIterator
D-MapIterator
5-Which of these is synchronized?
A-ArrayList
B-LinkedList
C-Vector
D-(None of these)
6-Which does not allow to store a null value?
A-TreeSet
B-LinkedHashSet
C-HashSet
D-None
7-Which is best suited to a multi-threaded environment?
A-WeakHashMap
B-Hashtable
C-HashMap
D-ConcurrentHashMap
8-The default capacity of a ArrayList is:
A-12
B-16
C-1
D-10
9-Which provides better performance for the insertion and removal from the middle of the list?
A-Vector
B-ArrayList
C-LinkedList
D-(All of these)
10-Which of these allows the storage of many null values?
A-Set
B-List
C-(None of these)
D-(All of these)
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