Instructor note:

Use the next$()$ method when scanning the date.

date $=$ scnr$.$next$()$;

Given the MileageTrackerNode class, complete main$()$ in the MileageTrackerLinkedList class to insert nodes into a linked list $($using the insertAfter$()$ method$).$ The first user$-$input value is the number of nodes in the linked list. Use the printNodeData$()$ method to print the entire linked list. DO NOT print the dummy head node.

Ex$.$ If the input is:

$3$

$2\mathrm{.}2$

$7/2/18$

$3\mathrm{.}2$

$7/7/18$

$4\mathrm{.}5$

$7/16/18$

the output is:

$2\mathrm{.}2,7/2/18$

$3\mathrm{.}2,7/7/18$

$4\mathrm{.}5,7/16/18$

import java.util.Scanner;

public class MileageTrackerLinkedList $\{$

public static void main $($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

$//$ References for MileageTrackerNode objects

MileageTrackerNode headNode;

MileageTrackerNode currNode;

MileageTrackerNode lastNode;

double miles;

String date;

int i;

$//$ Front of nodes list

headNode $=$ new MileageTrackerNode$()$;

lastNode $=$ headNode;

try $\{$

$//$ Scan the number of nodes

numNodes $=$ scnr$.$nextInt$()$;

$//$ For the scanned number of nodes, scan

$//$ in data and insert into the linked list

for $($int i $=0$; i $<$ numNodes; i$++)\{$

miles $=$ scnr$.$nextDouble$()$;

date $=$ scnr$.$next$()$;

currNode $=$ new MileageTrackerNode$($miles$,$ date$)$;

lastNode.insertAfter$($currNode$)$;

lastNode $=$ currNode;

$\}$

$//$ Call the printNodeData$()$ method

$//$ to print the entire linked list

currNode $=$ headNode.getNext$()$;

while $($currNode $!=$ null$)\{$

currNode.printNodeData$()$;

currNode $=$ currNode.getNext$()$;

$\}$

$\}$ catch $($Exception e$)\{$

System.out.println$("$Input error: $"+$ e$.$getMessage$())$;

$\}$ finally $\{$

scnr$.$close$()$;

$\}$

$\}$

$\}$