LinkedListExample.java Source code

Introduction

Here is the source code for LinkedListExample.java

Source

import java.util.Iterator;
import java.util.LinkedList;

public class LinkedListExample {
    public static void main(String[] args) {
        // Create a new LinkedList
        LinkedList<Integer> list = new LinkedList<Integer>();

        // Add Items to the array list
        list.add(new Integer(1));
        list.add(new Integer(2));
        list.add(new Integer(3));
        list.add(new Integer(4));
        list.add(new Integer(5));
        list.add(new Integer(6));
        list.add(new Integer(7));
        list.add(new Integer(8));
        list.add(new Integer(9));
        list.add(new Integer(10));

        // Use iterator to display the values
        for (Iterator i = list.iterator(); i.hasNext();) {
            Integer integer = (Integer) i.next();
            System.out.println(integer);
        }

        // Remove the element at index 5 (value=6)
        list.remove(5);

        // Set the value at index 5, this overwrites the value 7
        list.set(5, new Integer(66));

        // Use the linked list as a queue:
        // add an object to the end of the list (queue)
        // remove an item from the head of the list (queue)
        list.addLast(new Integer(11));
        Integer head = (Integer) list.removeFirst();
        System.out.println("Head: " + head);

        // Use iterator to display the values
        for (Iterator i = list.iterator(); i.hasNext();) {
            Integer integer = (Integer) i.next();
            System.out.println(integer);
        }
    }
}