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Create a queue using LinkedList class in Java
To create a queue using LinkedList class, try the following −
Queue<String> q = new LinkedList<String>();
q.offer("abc");
q.offer("def");
q.offer("ghi");
q.offer("jkl");
q.offer("mno");
q.offer("pqr");
q.offer("stu");
q.offer("vwx");After that to print the elements, you need to use check a condition for Queue as shown below −
Object ob;
while ((ob = q.poll()) != null) {
System.out.println(ob);
}The following is an example −
Example
import java.util.LinkedList;
import java.util.Queue;
public class Demo {
public static void main(String[] args) {
Queue<String> q = new LinkedList<String>();
q.offer("abc");
q.offer("def");
q.offer("ghi");
q.offer("jkl");
q.offer("mno");
q.offer("pqr");
q.offer("stu");
q.offer("vwx");
System.out.println("Queue head = " + q.element());
System.out.println("Size = " + q.size());
System.out.println("
Queue elements...");
Object ob;
while ((ob = q.poll()) != null) {
System.out.println(ob);
}
}
}Output
Queue head = abc Size = 8 Queue elements... abc def ghi jkl mno pqr stu vwx
Updated on: 25-Jun-2020
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