I need help with Part 1 it's supposed to be in Java but im lost! Here's the code I'm working with!

import java.util.Scanner;

public class Chickens {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

while (true){

System.out.print("Enter the number of chickens: ");

int chickens = scanner.nextInt();

if (chickens == 0) break;

System.out.print("Enter average # of eggs per chicken per day: ");

double eggsRate = scanner.nextDouble();

System.out.print("Enter pounds needed to feed per chicken per day: ");

double pounds = scanner.nextDouble();

System.out.print("Enter cost per pound for feed: ");

double costPerPound = scanner.nextDouble();

System.out.print("Enter empty cartoon cost: ");

double cartoonCost = scanner.nextDouble();

double totalCostinMonth = chickens * pounds * costPerPound * 30 + cartoonCost;

double dozenEggCost = (12 * totalCostinMonth) / (chickens * eggsRate * 30);

System.out.println("Number of chickens: " + chickens);

System.out.println("Average # of eggs per chicken per day: " + eggsRate);

System.out.println("Pounds needed to feed per chicken per day: " + pounds + " lbs");

System.out.println("Cost per pound $" + costPerPound);

System.out.println("Empty cartoon cost: $" + cartoonCost);

System.out.println("Total feed cost per month: $" + totalCostinMonth);

System.out.println("Cost to produce 12 eggs: " + dozenEggCost);

System.out.println();

//Part2

System.out.printf("%10s %10s %15s ", "Percent", "Feed Cost", "Dozen Egg Cost");

double feedCost , eggCost;

for(double percent = -0.25; percent <= 0.25; percent += 0.05) {

feedCost = (1+percent) * totalCostinMonth;

eggCost = (12 * feedCost) / (chickens * eggsRate * 30);

// double %% is used to print % symbol.

// %10.2f prints in 10column with 2 decimal places

System.out.printf("%10.2f%% %10.2f %15.2f ", percent, feedCost, eggCost);

}

}

System.out.println("Bye!");

}

}

Part 1:

Starting with the solution to Assignment 2, re-factor the program to do the following:

1. Store the parameters (number of chickens, eggs laid per day, etc.,) in static fields of the class.
2. Have separate methods for updating the parameters.
3. Use a switch statement to take menu selections for updating parameters or outputting results.
4. If the menu choice is 0, the program should terminate, invalid inputs should be ignored and any prompt repeated.
5. Before displaying updated menu, clear the screen

Part 2:

Using UMLet or Draw.IO, draw an Activity Diagram of the while loop.