$1)$ Explain where and why the program went wrong$/$and or not a good $($use line numbers$).$

$2)$ Fix them to get accurate results and smart program $.$ You don't have to rewrite the whole program, just explain how to fix them $($use line numbers$).$

import java.util.$*$;

import java.io$.*$;

class Personinfo $\{$

String type;

String name;

String gender;

int age;

$\}$

public class People $\{$

static ArrayList List $=$ new ArrayList$<>()$;

People $($String file$)$ throws FileNotFoundException $\{$

Scanner input $=$ new Scanner $($new File $("$people$.$txt$")$;

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

PersonInfo p $=$ new PersonInfo$()$;

p$.$type $=$ input.next$()$;

p$.$name $=$ input.next$()$;

p$.$gender $=$ input.next$()$;

p$.$age $=$ input.nextInt$()$;

list.add$($p$)$;

$\}$

$\}$

public void list$($String occupation$)\{$

String typeString $=""$;

if $($occupation$.$equals$("$s$"))\{$

typeString $=$ "student";

$\}$

if$($occupation$.$equals$("$t$"))\{$

typeString $=$ "teacher";

$\}$

System.out.println$("$List of people"$)$;

System.out.printf$("$Type: $\%$s

$,$ typeString$)$;

for $($int i $=0$; i $<$ list.size$()$; i$++)\{$

if $($list$.$get$($i$).$type.equals$($typeString$))\{$

System.out.println$($list$.$get$($i$)$;name$)$;

$\}$

$\}$

$\}$