Queue: A first-in-first-out (FIFO) data structure. Common implementations include LinkedList and PriorityQueue.
Example:

import java.util.LinkedList;
Queue queue = new LinkedList<>();
queue.add("Task1");
queue.add("Task2");
queue.add("Task3");
System.out.println(queue);
System.out.println("Poll: " + queue.poll());
System.out.println(queue);