Java MCQ: What is a PriorityQueue in Java?
a) A queue that orders elements based on their priority
b) A queue that stores elements in a first-in, first-out order
c) A queue that does not allow duplicates
d) A queue that maintains insertion order
Answer:
a) A queue that orders elements based on their priority
Explanation:
A PriorityQueue in Java is a queue that orders its elements based on their priority, which is determined by their natural ordering or a comparator provided at queue construction. It does not allow null elements and does not maintain any specific insertion order.
Understanding PriorityQueue is important for scenarios where elements need to be processed based on priority rather than the order in which they were added.
Reference links:
https://www.rameshfadatare.com/learn-java-programming/
https://www.javaguides.net/p/java-tutorial-learn-java-programming.html