please help with java assingment. my code is below $-$ i$\text{'}$m unsure how to write the reversed contents into a new file $-$ please help, my code is below: package assignment$2$;

import java.io$.$File;

import java.io$.$FileWriter;

import java.io$.$IOException;

import java.util.ArrayList;

import java.util.Scanner;

public class Reverse $\{$

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

ArrayList lines $=$ new ArrayList$<>()$;

$//$Read and process command line arguments

int files $=0$;$//$num of command line args that are files

String inFile $=""$;

String outFile $=""$;

if $($args$.$length $==0)\{$

usage$()$;

System.exit$(0)$;

$\}$else$\{$

$//$Read the command line arguments

for $($int i $=0$; i$<$ args.length; i$++)\{$

String arg $=$ args$[$i$]$;

if $($Character$.$isDigit$($arg$.$charAt$($i$)))\{$

usage$()$;

return;

$\}$else$\{$

$//$it is a file name

files$++$;

$\}$

if $($files $==1)\{$

inFile$=$arg;

$\}$else if $($files $==2)\{$

outFile $=$ arg;

$\}$

$\}$

$//$construct the scanner and print writer onjects for the reading and writing

File inputFile $=$ new File$($inFile$)$;

$//$ open file, reverse each line, and add it to the array list

try$($Scanner in $=$ new Scanner$($inputFile$))\{$

while $($in$.$hasNextLine$())\{$

String line $=$ in$.$nextLine$()$;

String reversed $=$ reverseString$($line$)$; $//$calling a method

lines.add$($reversed$)$;

$\}$

$\}$

$//$write the output to the txxt file

try$($FileWriter out $=$ new FileWriter$($outFile$))\{$

lines.forEach$(($line$)->\{$

try $\{$

out.write$($line$)$;

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

e$.$printStackTrace$()$;

$\}$

$\})$;

$\}$

$//$here

$\}$

$\}$

$//$ method reverses a string

static String reverseString$($String r$)\{$

String s $=""$;

for $($int i$=$r$.$length$()-1$; i$>=0$; i$++)\{$

char c $=$ r$.$charAt$($i$)$;

s $=$ s$+$c;

$\}$

return s;

$\}$

static void usage$()\{$

System.out.println$("$Usage: java reverse infile outfile"$)$;

$\}$

$\}$