Conversion of a List to a Queue in Java

// Java Program to Convert List to Queue
// Using LinkedList Constructor
import java.util.*;

// Driver Class
public class ListToQueueExample1 {
      // Main function
    public static void main(String[] args) {
        // Creating a List
        List<String> myList = Arrays.asList("A", "B", "C");

        // Using LinkedList Constructor to
        // Convert List to Queue
        Queue<String> myQueue = new LinkedList<>(myList);

        // Access elements in the Queue
        System.out.print("Queue elements: ");

        // Iterate over the elements and dequeue
        while (!myQueue.isEmpty()) {
            System.out.print(myQueue.poll()+", ");
        }
    }
}

// Java Program to Convert List to Queue
// Using ArrayDeque
import java.util.*;

// Driver Class
public class ListToQueueExample2 {
      // Main function
    public static void main(String[] args) {
        // Creating a List
        List<String> myList = Arrays.asList("A", "B", "C");

        // Using ArrayDeque Constructor to 
        // convert List to Queue
        Queue<String> myQueue = new ArrayDeque<>(myList);

        // Access elements in the Queue
        System.out.print("Queue elements: ");

        // Iterate over the elements and dequeue
        while (!myQueue.isEmpty()) {
            System.out.print(myQueue.poll()+", ");
        }
    }
}

// Java Program to Convert List to Queue
// Using addAll Method
import java.util.*;

// Driver Class
public class ListToQueueExample3 {
    // Main Function
    public static void main(String[] args)
    {
        // Creating a List
        List<String> myList = List.of("A", "B", "C");

        // Creating an Existing Queue (LinkedList in this
        // case)
        Queue<String> myQueue = new LinkedList<>();

        // Using addAll Method to add all elements from List
        // to Queue
        myQueue.addAll(myList);

        // Access elements in the Queue
        System.out.print("Queue elements: ");

        // Iterate over the elements and dequeue
        while (!myQueue.isEmpty()) {
            System.out.print(myQueue.poll() + ", ");
        }
    }
}