sample code to demonstrate LinkedList class

// Linked List simple application

package collection;

import java.util.LinkedList;

public class LinkedListDemo {

    public static void main(String[] args) 
    {
        LinkedList l=new LinkedList();

        l.add(new Integer(30));

        l.add(new Integer(10));
        l.add(new Integer(40)); 
        l.add(new Integer(30));

        System.out.println(l);

        l.addFirst(new Integer(5));
        l.addLast(new Integer(50));
        
        System.out.println(l);
    }
}

output:
[30, 10, 40, 30]
[5, 30, 10, 40, 30, 50]