The queue.size() function in Java is used to get the current size of a queue. queue.size() returns the number of elements in the queue.
The illustration below shows the visual representation of the queue.size() function.
The
java.util.*module is required in order to use this function.
public int size()
The queue.size() function does not require any parameters.
This function returns the number of elements in the queue.
import java.util.*;class JAVA {public static void main( String args[] ) {Queue<Integer> Queue = new LinkedList<Integer>();// adding elements in QueueQueue.add(1);Queue.add(3);Queue.add(5);Queue.add(2);Queue.add(0);System.out.println("Following are the elements in Queue: " + Queue);System.out.println("Following is the size of Queue: " + Queue.size());}}