COULD YOU FINISH THE UNFINISHED METHODS AND FIX ANY ERROS WITHIN THE CODE.

Edit Format View Help ort java.util.NosuchElementException; lic class LinkedList \{ private Node head; private Node tail; private int size; / * Creates an empty list. / public LinkedList() \{ head = null; tail = null; size =0; \} / * Returns a space-separated list of the elements in the list. * If the list contains no elements, return an empty string "" / public string tostring() \{ string result =""; //traverse each node in the linked list and add their data to string Node current = head; while(current != null) \{ result = result + current. data + " "; current = current. next; \} return result; \} /* * Returns the first item in the list. If the list is empty, * throw a NoSuchElementException. */ public int getFirst() return 0 ; LinkedList - Notepad LinkedList - Notepad File Edit Format View Help // A private Node class. By making it an inner class, // the outer class can access it easily, but the client cannot. private class Node \{ private int data; private Node next; // Constructs a new node with the specified data private Node(int data) this.data=data;this.next=null