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Convert a Queue to a List in Java
In order to convert a Queue to a List in Java, we can create an LinkedList and pass the Queue as an argument in the parameterized constructor of an ArrayList. This can be done as follows −
Queue q = new LinkedList(); List l = new ArrayList(q);
The quickest way is used to LinkedList in the first place which can be used both as a List and a Queue. This can be done as follows −
Queue q = new LinkedList(); List l = (List) q;
Let us see a program to convert a queue to a list −
Example
import java.util.LinkedList;
import java.util.List;
import java.util.Queue;
public class Example {
public static void main(String[] args) {
Queue q = new LinkedList();
q.add("Good");
q.add("Morning");
List l = (List) q;
System.out.println(l);
}
}Output
[Good, Morning]
Updated on: 25-Jun-2020
1K+ Views
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