In this task, you need to implement a JAVA project that calculates the sum$/$average of population numbers

by parsing them from text files $($using various delimiters, such as spaces, or an equal sign$).$ For implementation, this project consists of the following classes$/$files:

$1).$ PopulationHandler $($Interface$)$

In this interface class, you need to define two method prototypes.

$$ void fileRead$()//$ open file, handle FileNotFoundException, and

populaation space :

import java.io$.$File;

import java.io$.$FileNotFoundException;

import java.util.Scanner;

public class PopulationSpace implements PopulationHandler $\{$

private String filePath;

public PopulationSpace$($String filePath$)\{$

this.filePath $=$ filePath;

$\}$

@Override

public void fileRead$()\{$

try $($Scanner scanner $=$ new Scanner$($new File$($filePath$)))\{$

double sum $=0$; $//$ Placeholder for the sum

int count $=0$; $//$ Placeholder for the count of valid lines

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

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

if $($line$.$trim$().$isEmpty$())\{$

System.out.println$("$NULL line detected!"$)$;

continue;

$\}$

$//$ Process each line using space as the delimiter

String$[]$ parts $=$ line.split$("")$;

if $($parts$.$length $==2)\{$

$//$ Parse the population number and perform necessary operations

try $\{$

int population $=$ Integer.parseInt$($parts$[1].$trim$())$;

sum $+=$ population;

count$++$;

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

$//$ Handle the exception if the population number is not a valid integer

$\}$

$\}$

$\}$

$//$ Calculate the average

double average $=($count $>0)?$ sum $/$ count : $0$;

$//$ Output the result to the terminal

System.out.printf$("$The average population for the space delimiter is $\%\mathrm{.}2$f$\%$n$",$ average$)$;

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

System.out.println$("$File not found exception!"$)$;

$\}$

$\}$

@Override

public void getNumber$()\{$

$//$ No need to implement this method for PopulationSpace

$\}$

$\}$

population equal:

import java.io$.$File;

import java.io$.$FileNotFoundException;

import java.io$.$PrintWriter;

import java.util.Scanner;

public class PopulationEqual implements PopulationHandler $\{$

private String filePath;

public PopulationEqual$($String filePath$)\{$

this.filePath $=$ filePath;

$\}$

@Override

public void fileRead$()\{$

try $\{$

Scanner scanner $=$ new Scanner$($new File$($filePath$))$;

int sum $=0$;

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

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

String$[]$ parts $=$ line.split$("=")$;

if $($parts$.$length $==2)\{$

int population $=$ Integer.parseInt$($parts$[1].$trim$())$;

sum $+=$ population;

$\}$

$\}$

scanner.close$()$;

System.out.println$("$Sum for equal sign delimiter: $"+$ sum$)$;

try $($PrintWriter writer $=$ new PrintWriter$("$data$\_$equal.txt$"))\{$

writer.println$("$Sum for equal sign delimiter: $"+$ sum$)$;

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

e$.$printStackTrace$()$;

$\}$

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

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

$\}$

$\}$

@Override

public void getNumber$()\{$

$//$ No specific implementation needed for getNumber$()$ in this class

$\}$

$\}$

population handler:

$//$ PopulationHandler interface

public interface PopulationHandler $\{$

void fileRead$()$;

void getNumber$()$;

$\}$

main:

public class Main $\{$

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

$//$ Test case for FileNotFoundException

PopulationHandler popSpace $=$ new PopulationSpace$("./$FileDoesNotExist$.$txt$")$;

popSpace.fileRead$()$;

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

$//$ Test case for the Space delimiter

PopulationHandler popSpace$2=$ new PopulationSpace$("./$worldpop$\_$Space.txt$")$;

popSpace$2.$fileRead$()$;

popSpace$2.$getNumber$()$;

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

$//$ Test case for the Equal Sign delimiter

PopulationHandler popEqual $=$ new PopulationEqual$("./$worldpop$\_$EqualSign.txt$")$;

popEqual.fileRead$()$;

popEqual.getNumber$()$;

$\}$

$\}$

worldpop$\_$space.txt:

India $1147995898$

United States $303824646$

worldpop$\_$EqualSign.txt:

China $=1330044605$

United Kingdom $=60943912$In this task, you need to implement a JAVA project that calculates the sum$/$average of population numbers

by parsing them from text files $($using various delimiters, such as spaces, or an equal sign$).$ For implemen$-$

tation, this project consists of the following classes$/$files:

$.$ PopulationHandler $($Interface$)$