please help make this code run

import java.io$.$File;

import java.io$.$FileWriter;

import java.io$.$IOException;

import java.util.ArrayList;

import java.util.Scanner;

class Person $\{$

private String name;

private double height; $//$ in meters

private double weight; $//$ in kilograms

public Person$($String name, double height, double weight$)\{$

this.name $=$ name;

this.height $=$ height;

this.weight $=$ weight;

$\}$

public double getHeight$()\{$

return height;

$\}$

public double getWeight$()\{$

return weight;

$\}$

public void setHeight$($double height$)\{$

this.height $=$ height;

$\}$

public void setWeight$($double weight$)\{$

this.weight $=$ weight;

$\}$

@Override

public String toString$()\{$

return name $+""+$ height $+""+$ weight;

$\}$

@Override

public boolean equals$($Object o$)\{$

if $($o $==$ null$)$ return false;

if $($this $==$ o$)$ return true;

if $(!($o instanceof Person$))$ return false;

Person p $=($Person$)$ o;

return this.name.equals$($p$.$name$)$ && this.height $==$ p$.$height && this.weight $==$ p$.$weight;

$\}$

$\}$

interface PersonList $\{$

void add$($Person p$)$;

Person get$($int index$)$;

$\}$

class PersonSet implements PersonList $\{$

protected ArrayList people $=$ new ArrayList$<>()$;

@Override

public void add$($Person p$)\{$

if $(!$people.contains$($p$))\{$

people.add$($p$)$;

$\}$

$\}$

@Override

public Person get$($int index$)\{$

if $($index $>=0$ && index $<$ people.size$())\{$

return people.get$($index$)$;

$\}$

return null;

$\}$

@Override

public String toString$()\{$

StringBuilder sb $=$ new StringBuilder$()$;

for $($Person p : people$)\{$

sb$.$append$($p$.$toString$()).$append$("$

$")$;

$\}$

return sb$.$toString$()$;

$\}$

$\}$

public class Main $\{$

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

$//$ Test the Person and PersonSet classes

Person person$1=$ new Person$("$Mario$",1\mathrm{.}55,65\mathrm{.}0)$; $//$ Example data

PersonSet personSet $=$ new PersonSet$()$;

personSet.add$($person$1)$;

$//$ Reading from the hr$.$txt file

try $\{$

File inputFile $=$ new File$("$hr$.$txt$")$;

Scanner fileReader $=$ new Scanner$($inputFile$)$;

$//$ Skip the first row $($header$)$

if $($fileReader$.$hasNextLine$())\{$

fileReader.nextLine$()$;

$\}$

$//$ Reading and adding data to the PersonSet

while $($fileReader$.$hasNext$())\{$

String name $=$ fileReader.next$()$;

double height $=$ fileReader.nextDouble$()$;

double weight $=$ fileReader.nextDouble$()$;

Person person $=$ new Person$($name$,$ height, weight$)$;

personSet.add$($person$)$;

$\}$

fileReader.close$()$;

$//$ Displaying the list of persons

System.out.println$($personSet$.$toString$())$;

$//$ Writing the list to an output file

FileWriter fileWriter $=$ new FileWriter$("$outputfile$.$txt$")$;

fileWriter.write$($personSet$.$toString$())$;

fileWriter.close$()$;

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

e$.$printStackTrace$()$;

System.out.println$($e$)$;

System.exit$(1)$;

$\}$

$\}$

$\}$