public class LinkedListRunner public static void main (String(] args) LinkedList myList - new LinkedList (); myList.addFirst ("aaa"); myList.addFirst ("bbb"); myList.addFirst ("ccc"); myList.addFirst ("ddd"); System.out.printin (myList);
public class LinkedListRunner public static void main (String(] args) LinkedList myList - new LinkedList (); myList.addFirst ("aaa"); myList.addFirst ("bbb"); myList.addFirst ("ccc"); myList.addFirst ("ddd"); System.out.printin (myList);
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
Related questions
Question
![public class LinkedListRunner
public static void main (String [] args)
{
LinkedList myList = new LinkedList ();
myList.addFirst ("aaa") :
myList.addFirst ("bbb");
myList.addFirst ("ccc");
myList.addFirst ("ddd");
System.out.println (myList);](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47bba70b-d35c-4545-add1-e8862c4403b1%2F99e3c1eb-0caf-4f2b-bdde-365dfd8ab56c%2F0j2oa4_processed.jpeg&w=3840&q=75)
Transcribed Image Text:public class LinkedListRunner
public static void main (String [] args)
{
LinkedList myList = new LinkedList ();
myList.addFirst ("aaa") :
myList.addFirst ("bbb");
myList.addFirst ("ccc");
myList.addFirst ("ddd");
System.out.println (myList);
![Lab 19 Building a linked list
Start this lab with the code listed below. The LinkedList class defines the rudiments of the code
needed to build a linked list of Node objects. You will first complete the code for
its addFirst method. This method is passed an object that is to be added to the beginning of the list.
Write code that links the passed object to the list by completing the following tasks in order:
1. Create a new Node object.
2. Make the data variable in the new Node object reference the object that was passed to addFirst.
3. Make the next variable in the new Node object reference the object that is currently referenced in
variable first.
4. Make variable first reference the new Node.
Test your code by running the main method in the LinkedListRunner class below. Explain, step by
step, why each of the above operations is necessary. Why are the string objects in the reverse order
from the way they were added?
public class LinkedList
{
private Node first;
public LinkedList () { first = null; }
public Object getFirst ()
if (first == null) { throw new NoSuchElementException (); }
return first.data;
public void addFirst (Object element)
// put your code here
public String toString ()
{
String temp = "";
Node current = first;
while (current != null)
temp = temp + current.data.toString () + '\n';
current = current.next;
return temp;
class Node
public Object data;
public Node next;](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F47bba70b-d35c-4545-add1-e8862c4403b1%2F99e3c1eb-0caf-4f2b-bdde-365dfd8ab56c%2Fukrihbg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Lab 19 Building a linked list
Start this lab with the code listed below. The LinkedList class defines the rudiments of the code
needed to build a linked list of Node objects. You will first complete the code for
its addFirst method. This method is passed an object that is to be added to the beginning of the list.
Write code that links the passed object to the list by completing the following tasks in order:
1. Create a new Node object.
2. Make the data variable in the new Node object reference the object that was passed to addFirst.
3. Make the next variable in the new Node object reference the object that is currently referenced in
variable first.
4. Make variable first reference the new Node.
Test your code by running the main method in the LinkedListRunner class below. Explain, step by
step, why each of the above operations is necessary. Why are the string objects in the reverse order
from the way they were added?
public class LinkedList
{
private Node first;
public LinkedList () { first = null; }
public Object getFirst ()
if (first == null) { throw new NoSuchElementException (); }
return first.data;
public void addFirst (Object element)
// put your code here
public String toString ()
{
String temp = "";
Node current = first;
while (current != null)
temp = temp + current.data.toString () + '\n';
current = current.next;
return temp;
class Node
public Object data;
public Node next;
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