package queue;
// Java orogram to demonstrate working of Queue
// interface in Java
import java.util.LinkedList;
import java.util.Queue;
public class QueueDemo {
public static void main(String[] args) {
Queue q = new LinkedList<>();
// Adds elements {0, 1, 2, 3, 4} to queue
for (int i = 0; i < 5; i++)
q.add(i);
// Display contents of the queue.
System.out.println("Elements of queue-" + q);
// To remove the head of queue.
int removedele = q.remove();
System.out.println("removed element-" + removedele);
System.out.println(q);
// To view the head of queue
int head = q.peek();
System.out.println("head of queue-" + head);
// Rest all methods of collection interface,
// Like size and contains can be used with this
// implementation.
int size = q.size();
System.out.println("Size of queue-" + size);
}
}