Not sure what it needs me to change

Write the inputCities$()$ method in the SmallTowns class. Within inputCities$(),$ use scnr to read pairs of inputs, integer currPopulation and string currName, until $-99$ is read from input. Create each City object with currPopulation and currName as arguments and append each object to ArrayList cityList.

Ex: If the input is $3600$ Opal $2600$ Yonder $2200$ Goshen $4500$ Worland $-99,$ then the output is:

City population: $3600,$ Name: Opal City population: $2600,$ Name: Yonder City population: $2200,$ Name: Goshen City population: $4500,$ Name: Worland

Ex: If the input is $3600$ Opal $2600$ Yonder $2200$ Goshen $4500$ Worland $-99,$ then the output is:

City population: $3600,$ Name: Opal

City population: $2600,$ Name: Yonder

City population: $2200,$ Name: Goshen

City population: $4500,$ Name: Worland

import java.util.Scanner;

import java.util.ArrayList;

public class SmallTowns $\{$

private ArrayList cityList $=$ new ArrayList$()$;

CitySystem city;

public void inputCities$()\{$

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

int currPopulation $=$ scnr$.$nextInt$()$;

if $($currPopulation $==-99)\{$

$\}$

String currName $=$ scnr$.$next$()$;

City city $=$ new City$()$;

city.setDetails$($currPopulation$,$ currName$)$;

cityList.add$($city$)$;

Failed to compile

CitySystem.java:$9$: error: method inputCities in class SmallTowns cannot be applied to given

smallTowns.inputCities$($scnr$)$;

required: no arguments

found: Scanner

reason: actual and formal argument lists differ in length

$1$ error

public void printCities$()\{$

City currCity;

int i;

for $($i $=0$; i $$ cityList.size$()$; $++$i$)\{$

currCity $=$ cityList.get$($i$)$;

currCity.print$()$;

$\}$

$\}$

$\}$

Failed to compile

CitySystem.java:$9$: error: method inputcities in class SmallTowns cannot be applied to given $1$

smallTowns.inputCities$($scnr$)$;

required: no arguments

found: Scanner

reason: actual and formal argument lists differ in length

$1$ error

public class City $\{$

private int population;

private String name;

public void setDetails$($int newPopulation, String newName$)\{$

population $=$ newPopulation;

name $=$ newName;

$\}$

public void print$()\{$

System.out.println$("$City population: $"+$ population $+",$ Name: $"+$ name$)$;

$\}$

$\}$

import java.util.Scanner;

import java.util.ArrayList;

public class CitySystem $\{$

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

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

SmallTowns smallTowns $=$ new SmallTowns$()$;

smallTowns.inputCities$($scnr$)$;

smallTowns.printCities$()$;

$\}$

$\}$