design and code 4 additional methods for this solution:- to the existing code 1. a method which

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Question:

design and code 4 additional methods for this solution:- to the existing code
1. a method which displays the menu, prompts for and validates the menu choice, and returns it
2. a method which prompts for and validates the quantity (minimum 1, maximum 200) and returns it
3. a method which prompts for and validates the weight (minimum 1.0, maximum 400.0) and returns it
4. a void method which calculates and displays the average weight
• Use class constants for the apple types and for the maximum quantity and weight values

// AppleLoggerMethods.java
// Iam Aprogrammer
// 5/17/21
// Log apple shipments and calculate average weights

import java.util.Scanner;
import java.io.*;

public class AppleLoggerMethods {

// constants for apple types
static final int NUM_TYPES = 4;
static final String APPLE1 = "Granny Smith";
static final String APPLE2 = "Paula Red";
static final String APPLE3 = "Golden Delicious";
static final String APPLE4 = "Pink Pearl";
static final String APPLE_UNKNOWN = "Unknown Apple Type";

public static void main(String[] args) throws IOException {

// variables for quantity, weight, average, and apple type
int quantity = 0;
double weight = 0.0;
double average = 0.0;

// menu selections
String appleType = APPLE_UNKNOWN;

int menuChoice = 0;
Scanner input = new Scanner(System.in);
String wantsToContinue = "y";

// accumulator
double totalWeight = 0.0;

// output file
PrintWriter outFile = new PrintWriter("apples.txt");

// prompt the user for apple information until they are done
while (wantsToContinue.equalsIgnoreCase("y")) {

menuChoice = getMenuChoice(input);

// set apple type based on menu choice
switch (menuChoice) {
case 1:
appleType = APPLE1;
break;
case 2:
appleType = APPLE2;
break;
case 3:
appleType = APPLE3;
break;
case 4:
appleType = APPLE4;
break;
default:
appleType = APPLE_UNKNOWN;
break;
}

if (appleType == APPLE_UNKNOWN)
System.out.println("Sorry, that is an invalid choice.");

else {
System.out.printf("Please enter the quantity of %s apples received [1-200]: ",
appleType);
quantity = input.nextInt();
System.out.printf("Please enter the total weight of the %s apples, in lbs. [1.0-400.0]: ",
appleType);
weight = input.nextDouble();
average = weight / quantity;
System.out.printf("The average weight of your %s apples is %.2f lbs.",
appleType, average);

outFile.printf("%-20s %-4d %-4.2f", appleType, quantity, weight);

totalWeight += weight; // add weight to accumulator
}
System.out.print("Would you like to log more apples? (y/n): ");

// flush the keyboard buffer, then read the next line
input.nextLine();
wantsToContinue = input.nextLine();
}
System.out.printf("Your total shipment weighs %.2f lbs.", totalWeight);
outFile.close();
}
// get and validate menu choice
static int getMenuChoice(Scanner input) {

int menuChoice = 0;

do { // nested loop

// display menu
System.out.println(1 + ". " + APPLE1);
System.out.println(2 + ". " + APPLE2);
System.out.println(3 + ". " + APPLE3);
System.out.println(4 + ". " + APPLE4);
System.out.print(
"Please enter the apple type from the choices displayed above: ");

menuChoice = input.nextInt();
if (menuChoice < 1 || menuChoice > NUM_TYPES)
System.out.println("Sorry, that is an invalid choice.");

} while (menuChoice < 1 || menuChoice > NUM_TYPES);

return menuChoice;
}

}