What are some examples of using queues in Java?

What are some examples of using queues in Java?

In Java, queues are part of the Java Collections Framework. You can use classes like LinkedList, PriorityQueue, and ArrayDeque. Would you like to see specific examples?

Yes, please provide an example using LinkedList.

Sure! Here's a simple example:

import java.util.LinkedList;

public class QueueExample {
    public static void main(String[] args) {
        LinkedList<String> queue = new LinkedList<>();
        queue.add("First");
        queue.add("Second");
        queue.add("Third");

        System.out.println("Queue: " + queue);
        System.out.println("Removed: " + queue.remove());
        System.out.println("Queue after removal: " + queue);
    }
}

This code demonstrates adding and removing elements from a queue.

What about using PriorityQueue?

Here's an example using PriorityQueue:

import java.util.PriorityQueue;

public class PriorityQueueExample {
    public static void main(String[] args) {
        PriorityQueue<Integer> pq = new PriorityQueue<>();
        pq.add(5);
        pq.add(1);
        pq.add(3);

        System.out.println("Priority Queue: " + pq);
        System.out.println("Removed: " + pq.poll());
        System.out.println("Priority Queue after removal: " + pq);
    }
}

This example shows how elements are ordered based on their natural ordering.