So I have this code that I’ve been trying to add java BufferedReader and BufferedWriter to it and have a text file but it’s not working.
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.LinkedList;
// Define the Food class
class Food {
private String name;
private String countryOfOrigin;
private String code;
private String additionalInfo;
// Constructor
public Food(String name, String countryOfOrigin, String code, String additionalInfo) {
this.name = name;
this.countryOfOrigin = countryOfOrigin;
this.code = code;
this.additionalInfo = additionalInfo;
}
// Getter methods
public String getName() {
return name;
}
public String getCountryOfOrigin() {
return countryOfOrigin;
}
public String getCode() {
return code;
}
public String getAdditionalInfo() {
return additionalInfo;
}
}
// Define the Administrator class
class Administrator {
private LinkedList<Food> foodCatalog;
private LinkedList<FoodRequest> foodRequests;
// Constructor
public Administrator() {
foodCatalog = new LinkedList<>();
foodRequests = new LinkedList<>();
}
// Method to add new food to the catalog
public void addFood(Food food) {
foodCatalog.add(food);
System.out.println("Food added successfully.");
}
// Method to delete information of a food item
public void deleteFood(String name) {
for (Food food : foodCatalog) {
if (food.getName().equalsIgnoreCase(name)) {
foodCatalog.remove(food);
System.out.println("Food deleted successfully.");
return;
}
}
System.out.println("Food with name " + name + " not found.");
}
// Method to search for a particular food variety by name
public Food searchFood(String name) {
for (Food food : foodCatalog) {
if (food.getName().equalsIgnoreCase(name)) {
return food;
}
}
return null;
}
// Method to check the number of food varieties
public int checkVarieties() {
return foodCatalog.size();
}
// Method to generate reports based on different criteria
public void generateReports() {
// Implement report generation logic
System.out.println("Generating reports...");
}
// Method to review food requests from users
public void reviewFoodRequests() {
System.out.println("Food Requests:");
for (FoodRequest request : foodRequests) {
System.out.println("Name: " + request.getName());
System.out.println("Country of Origin: " + request.getCountryOfOrigin());
System.out.println("Additional Info: " + request.getAdditionalInfo());
System.out.println("Feedback: " + request.getFeedback());
System.out.println();
}
}
// Method to give feedback on user's requests
public void giveFeedback(String name, String feedback) {
for (FoodRequest request : foodRequests) {
if (request.getName().equalsIgnoreCase(name)) {
request.setFeedback(feedback);
System.out.println("Feedback given successfully.");
return;
}
}
System.out.println("Food request with name " + name + " not found.");
}
// Method to add a food request from the user
public void addFoodRequest(FoodRequest request) {
foodRequests.add(request);
System.out.println("Food request submitted successfully.");
}
// Method to access food catalog
public LinkedList<Food> getFoodCatalog() {
return foodCatalog;
}
}
// Define the User class
class User {
// Method to inquire about specific food including information
public void inquireAboutFood(String name, Administrator admin) {
Food food = admin.searchFood(name);
if (food != null) {
System.out.println("Food Name: " + food.getName());
System.out.println("Country of Origin: " + food.getCountryOfOrigin());
System.out.println("Code: " + food.getCode());
System.out.println("Additional Info: " + food.getAdditionalInfo());
} else {
System.out.println("Food not found.");
}
}
// Method to request for a new food item
public void requestNewFood(BufferedReader reader, Administrator admin) throws IOException {
System.out.println("Enter food name:");
String name = reader.readLine();
System.out.println("Enter country of origin:");
String countryOfOrigin = reader.readLine();
System.out.println("Enter additional information:");
String additionalInfo = reader.readLine();
FoodRequest request = new FoodRequest(name, countryOfOrigin, additionalInfo);
admin.addFoodRequest(request);
}
// Method to view all available food items
public void viewAllFoodItems(Administrator admin) {
System.out.println("--------------------------------------------------");
System.out.printf("%-20s | %-20s | %-20s | %-20s%n", "Name", "Country of Origin", "Code", "Additional Info");
System.out.println("--------------------------------------------------");
for (Food food : admin.getFoodCatalog()) {
System.out.printf("%-20s | %-20s | %-20s | %-20s%n", food.getName(), food.getCountryOfOrigin(), food.getCode(), food.getAdditionalInfo());
}
System.out.println("--------------------------------------------------");
}
// Method to raise a complaint about non-availability of food
public void complain() {
System.out.println("Complaint raised successfully.");
}
}
// Define the FoodRequest class
class FoodRequest {
private String name;
private String countryOfOrigin;
private String additionalInfo;
private String feedback;
// Constructor
public FoodRequest(String name, String countryOfOrigin, String additionalInfo) {
this.name = name;
this.countryOfOrigin = countryOfOrigin;
this.additionalInfo = additionalInfo;
this.feedback = "Pending";
}
// Getter and setter methods
public String getName() {
return name;
}
public String getCountryOfOrigin() {
return countryOfOrigin;
}
public String getAdditionalInfo() {
return additionalInfo;
}
public String getFeedback() {
return feedback;
}
public void setFeedback(String feedback) {
this.feedback = feedback;
}
}
// Define the Main class
public class JavaApplication31 {
public static void main(String[] args) {
Administrator admin = new Administrator();
User user = new User();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
try {
while (true) {
System.out.println("Please select the user:");
System.out.println("1. Administrator");
System.out.println("2. User");
System.out.println("3. Exit");
int choice = Integer.parseInt(reader.readLine());
switch (choice) {
case 1: // Administrator
adminMenu(reader, admin);
break;
case 2: // User
userMenu(reader, user, admin);
break;
case 3: // Exit
System.out.println("Exiting the program...");
return;
default:
System.out.println("Invalid choice. Please try again.");
}
}
} catch (IOException | NumberFormatException e) {
System.out.println("Error reading input. Exiting...");
e.printStackTrace();
}
}
// Method to display and handle administrator menu
private static void adminMenu(BufferedReader reader, Administrator admin) throws IOException {
while (true) {
System.out.println("Administrator Menu:");
System.out.println("1. Add new food and its information");
System.out.println("2. Delete the information of the food");
System.out.println("3. Search for a particular food variety by name");
System.out.println("4. Check the number of food varieties");
System.out.println("5. Generate the reports of the food");
System.out.println("6. Review food requests from users");
System.out.println("7. Give feedback on user's requests");
int choice = Integer.parseInt(reader.readLine());
switch (choice) {
case 1: // Add new food
System.out.println("Enter food name:");
String name = reader.readLine();
System.out.println("Enter country of origin:");
String countryOfOrigin = reader.readLine();
System.out.println("Enter additional information:");
String additionalInfo = reader.readLine();
Food newFood = new Food(name, countryOfOrigin, "", additionalInfo);
admin.addFood(newFood);
break;
case 2: // Delete food
System.out.println("Enter name of the food to delete:");
String nameToDelete = reader.readLine();
admin.deleteFood(nameToDelete);
break;
case 3: // Search food
System.out.println("Enter name of the food to search:");
String nameToSearch = reader.readLine();
Food searchedFood = admin.searchFood(nameToSearch);
if (searchedFood != null) {
System.out.println("Food found:");
System.out.println("Name: " + searchedFood.getName());
System.out.println("Country of Origin: " + searchedFood.getCountryOfOrigin());
System.out.println("Code: " + searchedFood.getCode());
System.out.println("Additional Info: " + searchedFood.getAdditionalInfo());
} else {
System.out.println("Food not found.");
}
break;
case 4: // Check varieties
System.out.println("Number of food varieties: " + admin.checkVarieties());
break;
case 5: // Generate reports
admin.generateReports();
break;
case 6: // Review food requests
admin.reviewFoodRequests();
break;
case 7: // Give feedback on user's requests
System.out.println("Enter name of the food request to give feedback:");
String requestName = reader.readLine();
System.out.println("Enter feedback:");
String feedback = reader.readLine();
admin.giveFeedback(requestName, feedback);
break;
default:
System.out.println("Invalid choice. Please try again.");
}
System.out.println("Do you want to continue as Administrator? (yes/no)");
String continueChoice = reader.readLine();
if (!continueChoice.equalsIgnoreCase("yes")) {
break;
}
}
}
// Method to display and handle user menu
private static void userMenu(BufferedReader reader, User user, Administrator admin) throws IOException {
while (true) {
System.out.println("User Menu:");
System.out.println("1. Inquire about the specific food including the information");
System.out.println("2. Request for a new item");
System.out.println("3. View all available food items");
System.out.println("4. Complain if any");
int choice = Integer.parseInt(reader.readLine());
switch (choice) {
case 1: // Inquire about food
System.out.println("Enter name of the food to inquire:");
String nameToInquire = reader.readLine();
user.inquireAboutFood(nameToInquire, admin);
break;
case 2: // Request new food
user.requestNewFood(reader, admin);
break;
case 3: // View all available food items
user.viewAllFoodItems(admin);
break;
case 4: // Raise a complaint
user.complain();
break;
default:
System.out.println("Invalid choice. Please try again.");
}
System.out.println("Do you want to continue as User? (yes/no)");
String continueChoice = reader.readLine();
if (!continueChoice.equalsIgnoreCase("yes")) {
break;
}
}
}
}
I tried adding foodList.txt in correct directory and i expected that when I run the program then I can see the information in foodList.txt
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