Main.java

import java.util.Scanner;

class Main {
    private static final Scanner input = new Scanner(System.in);

    // Credentials
    static String username = "Isuru";
    static String password = "456";

    // 2D arrays for data storage
    static String[][] suppliers = new String[100][2]; // [id, name]
    static int supplierCount = 0;

    static String[] categories = new String[100];
    static int categoryCount = 0;

    static String[][] items = new String[100][6]; // [code, supplierId, category, description, unitPrice, quantity]
    static int itemCount = 0;

    private final static void clearConsole() {
        final String os = System.getProperty("os.name");
        try {
            if (os.equals("Linux")) {
                System.out.print("\033\143");
            } else if (os.equals("Windows")) {
                new ProcessBuilder("cmd", "/c", "cls").inheritIO().start().waitFor();
            } else {
                System.out.print("\033[H\033[2J");
                System.out.flush();
            }
        } catch (final Exception e) {
            System.err.println(e.getMessage());
        }
    }

    public static void loginpage() {
        clearConsole();
        printTitle("LOGIN PAGE");

        do {
            System.out.print("\nUser name : ");
            String uName = input.next();

            if (uName.equals(username)) {
                break;
            } else {
                System.out.println("user name is invalid.! Please try again.!");
            }
        } while (true);

        do {
            System.out.print("\nPassword : ");
            String pass = input.next();

            if (pass.equals(password)) {
                break;
            } else {
                System.out.println("Password is incorrect..! Please try again.!");
            }
        } while (true);
    }

    public static void exitPage() {
        clearConsole();
        System.out.println("........................");
        System.out.println("(Program exited with code: 0)");
        System.out.println("Press return to continue...");
        input.nextLine();
    }

    public static void homepage() {
        do {
            clearConsole();
            printTitle("WELCOME TO THE PIGEON SERVICE STOCK MANAGEMENT SYSTEM");

            System.out.print("\n");
            System.out.printf("%-40s", "[1] Change the Credentials");
            System.out.println("[2] Supplier Manage");
            System.out.printf("%-40s", "[3] Stock Manage");
            System.out.println("[4] Log Out");
            System.out.printf("%-40s", "[5] Exit the System");
            System.out.println("\n");

            System.out.print("Enter a option to continue > ");
            String num = input.next();
            input.nextLine();

            switch (num) {
                case "1":
                    boolean relogin = credentialsManage();
                    if (relogin) {
                        loginpage();
                    }
                    break;
                case "2":
                    supplierManage();
                    break;
                case "3":
                    stockManage();
                    break;
                case "4":
                    loginpage();
                    break;
                case "5":
                    exitPage();
                    return;
                default:
                    System.out.println("Invalid Input. Try Again!");
                    System.out.println("Press Enter to continue...");
                    input.nextLine();
            }
        } while (true);
    }

    public static boolean credentialsManage() {
        clearConsole();
        printTitle("CREDENTIAL MANAGE");

        do {
            System.out.print("\nEnter User name to verify it's you: ");
            String uName = input.next();

            if (uName.equals(username)) {
                break;
            } else {
                System.out.println("user name is invalid.! Try again.!");
            }
        } while (true);

        System.out.println("Hey " + username);

        do {
            System.out.print("\nEnter your Current Password : ");
            String pass = input.next();

            if (pass.equals(password)) {
                break;
            } else {
                System.out.println("Password is incorrect..! Please try again.!");
            }
        } while (true);

        System.out.print("Enter your New password : ");
        input.nextLine();
        String newPass = input.nextLine();
        password = newPass;
        System.out.println();
        System.out.print("Password Change Sucessfully! ");

        do {
            System.out.print("Do you want to go home page (Y/N) : ");
            String yesOrNo = input.next();
            if (yesOrNo.equalsIgnoreCase("y")) {
                return false;
            } else if (yesOrNo.equalsIgnoreCase("n")) {
                return true;
            } else {
                System.out.println("\nInvalid input ");
            }
        } while (true);
    }

    public static void supplierManage() {
        while (true) {
            clearConsole();
            printTitle("SUPPLIER MANAGE");
            System.out.println();
            System.out.printf("%-40s", "[1] Add Supplier");
            System.out.println("[2] Update Supplier");
            System.out.printf("%-40s", "[3] Delete Supplier");
            System.out.println("[4] View Suppliers");
            System.out.printf("%-40s", "[5] Search Supplier");
            System.out.println("[6] Home Page");
            System.out.println();

            System.out.print("Enter an option to continue > ");
            String option = input.next();
            input.nextLine();

            switch (option) {
                case "1":
                    addSupplier();
                    break;
                case "2":
                    updateSupplier();
                    break;
                case "3":
                    deleteSupplier();
                    break;
                case "4":
                    viewSuppliers();
                    break;
                case "5":
                    searchSupplier();
                    break;
                case "6":
                    return;
                default:
                    System.out.println("Invalid option! Please try again.");
                    System.out.println("Press Enter to continue...");
                    input.nextLine();
            }
        }
    }

    public static void addSupplier() {
        while (true) {
            clearConsole();
            printTitle("ADD SUPPLIER");

            String supplierId;
            boolean exists;
            do {
                exists = false;
                System.out.print("\nEnter Supplier ID: ");
                supplierId = input.next();

                for (int i = 0; i < supplierCount; i++) {
                    if (suppliers[i][0].equals(supplierId)) {
                        exists = true;
                        System.out.println("Supplier ID already exists! Please try different ID.");
                        break;
                    }
                }
            } while (exists);

            input.nextLine();
            System.out.print("Enter Supplier Name: ");
            String supplierName = input.nextLine();

            suppliers[supplierCount][0] = supplierId;
            suppliers[supplierCount][1] = supplierName;
            supplierCount++;

            System.out.print("\nSupplier added successfully! ");
            do {
                System.out.print("Do you want to add another supplier (Y/N): ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        }
    }

    public static void updateSupplier() {
        while (true) {
            clearConsole();
            printTitle("UPDATE SUPPLIER");

            if (supplierCount == 0) {
                System.out.println("\nNo suppliers found! Please add suppliers first.");
                System.out.println("Press Enter to continue...");
                input.nextLine();
                return;
            }

            int index = -1;
            do {
                System.out.print("\nSupplier ID : ");
                String supplierId = input.next();

                for (int i = 0; i < supplierCount; i++) {
                    if (suppliers[i][0].equals(supplierId)) {
                        index = i;
                        break;
                    }
                }

                if (index == -1) {
                    System.out.println("Can't find supplier ID! Try again.");
                } else {
                    break;
                }
            } while (true);

            System.out.println("Current Supplier Name: " + suppliers[index][1]);
            input.nextLine();
            System.out.print("\nEnter New Supplier Name: ");
            String newName = input.nextLine();

            suppliers[index][1] = newName;

            System.out.print("Supplier updated successfully! ");
            do {
                System.out.print("Do you want to update another supplier (Y/N): ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        }
    }

    public static void deleteSupplier() {
        while (true) {
            clearConsole();
            printTitle("DELETE SUPPLIER");
            System.out.println();

            if (supplierCount == 0) {
                System.out.println("No suppliers found! Please add suppliers first.");
                System.out.println("Press Enter to continue...");
                input.nextLine();
                return;
            }

            int index = -1;
            String supplierId;
            do {
                System.out.print("\nEnter Supplier ID to delete: ");
                supplierId = input.next();

                for (int i = 0; i < supplierCount; i++) {
                    if (suppliers[i][0].equals(supplierId)) {
                        index = i;
                        break;
                    }
                }

                if (index == -1) {
                    System.out.println("Can't find supplier ID. Try again.");
                } else {
                    break;
                }
            } while (true);

            for (int i = index; i < supplierCount - 1; i++) {
                suppliers[i][0] = suppliers[i + 1][0];
                suppliers[i][1] = suppliers[i + 1][1];
            }
            supplierCount--;

            System.out.print("Supplier deleted successfully! ");
            do {
                System.out.print("Do you want to delete another supplier (Y/N): ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        }
    }

    public static void viewSuppliers() {
        clearConsole();
        printTitle("VIEW SUPPLIERS");
        System.out.println();

        System.out.println("+---------------+------------------------------+");
        System.out.print("|");
        System.out.printf("%-15s", "SUPPLIER ID");
        System.out.print("|");
        System.out.printf("%-30s", "SUPPLIER NAME");
        System.out.println("|");
        System.out.println("+---------------+------------------------------+");

        for (int i = 0; i < supplierCount; i++) {
            System.out.print("|");
            System.out.printf("%-15s", suppliers[i][0]);
            System.out.print("|");
            System.out.printf("%-30s", suppliers[i][1]);
            System.out.println("|");
        }
        System.out.println("+---------------+------------------------------+");

        System.out.println();
        do {
            System.out.print("Do you want to go to supplier manage menu (Y/N): ");
            String choice = input.next();
            if (choice.equalsIgnoreCase("n")) {
                System.exit(0);
            } else if (choice.equalsIgnoreCase("y")) {
                break;
            } else {
                System.out.println("invalid input");
            }
        } while (true);
    }

    public static void searchSupplier() {
        while (true) {
            clearConsole();
            printTitle("SEARCH SUPPLIER");

            if (supplierCount == 0) {
                System.out.println("\nNo suppliers found! Please add suppliers first.");
                System.out.println("Press Enter to continue...");
                input.nextLine();
                return;
            }

            do {
                System.out.print("\nEnter Supplier ID: ");
                String supplierId = input.next();

                boolean found = false;
                for (int i = 0; i < supplierCount; i++) {
                    if (suppliers[i][0].equals(supplierId)) {
                        System.out.println("Supplier ID: " + suppliers[i][0]);
                        System.out.println("Supplier Name: " + suppliers[i][1]);
                        found = true;
                        break;
                    }
                }

                if (!found) {
                    System.out.println("Can't find supplier ID. Try again!");
                } else {
                    break;
                }
            } while (true);

            System.out.print("Supplier search successfully! ");
            do {
                System.out.print("Do you want to search another supplier (Y/N) ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        }
    }

    public static void stockManage() {
        while (true) {
            clearConsole();
            printTitle("STOCK MANAGE");
            System.out.println();
            System.out.printf("%-40s", "[1] Manage Item Categories");
            System.out.println("[2] Add Item");
            System.out.printf("%-40s", "[3] Get Items Supplier Wise");
            System.out.println("[4] View Items");
            System.out.printf("%-40s", "[5] Rank Items Per Unit Price");
            System.out.println("[6] Home Page");
            System.out.println();

            System.out.print("Enter an option to continue > ");
            String option = input.next();
            input.nextLine();

            switch (option) {
                case "1":
                    manageItemCategories();
                    break;
                case "2":
                    addItem();
                    break;
                case "3":
                    getItemsSupplierWise();
                    break;
                case "4":
                    viewItems();
                    break;
                case "5":
                    rankItemsPerUnitPrice();
                    break;
                case "6":
                    return;
                default:
                    System.out.println("Invalid option! Please try again.");
                    System.out.println("Press Enter to continue...");
                    input.nextLine();
            }
        }
    }

    public static void manageItemCategories() {
        while (true) {
            clearConsole();
            printTitle("MANAGE ITEM CATEGORIES");
            System.out.println();
            System.out.printf("%-40s", "[1] Add New Item Category");
            System.out.println("[2] Delete Item Category");
            System.out.printf("%-40s", "[3] Update Item Category");
            System.out.println("[4] Stock Management Menu");
            System.out.println();

            System.out.print("Enter an option to continue > ");
            String option = input.next();
            input.nextLine();

            switch (option) {
                case "1":
                    addItemCategory();
                    break;
                case "2":
                    deleteItemCategory();
                    break;
                case "3":
                    updateItemCategory();
                    break;
                case "4":
                    return;
                default:
                    System.out.println("Invalid option! Please try again.");
                    System.out.println("Press Enter to continue...");
                    input.nextLine();
            }
        }
    }

    public static void addItemCategory() {
        do {
            clearConsole();
            printTitle("ADD ITEM CATEGORY");
            System.out.println();

            boolean exists;
            String categoryName;
            do {
                exists = false;
                System.out.print("Enter the new item Category : ");
                categoryName = input.next();

                for (int i = 0; i < categoryCount; i++) {
                    if (categories[i].equalsIgnoreCase(categoryName)) {
                        System.out.println("Category already exists! Please try different Category.");
                        exists = true;
                        break;
                    }
                }
            } while (exists);

            categories[categoryCount] = categoryName;
            categoryCount++;
            System.out.print("Added successfully!");

            do {
                System.out.print(" Do you want to add another Category (Y/N): ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        } while (true);
    }

    public static void deleteItemCategory() {
        do {
            clearConsole();
            printTitle("DELETE ITEM CATEGORY");

            if (categoryCount == 0) {
                System.out.println("\nNo categories found!");
                System.out.println("Press Enter to continue...");
                input.nextLine();
                return;
            }
            int index = -1;
            String categoryName;
            do {
                System.out.print("\nEnter Category Name to delete: ");
                categoryName = input.next();

                for (int i = 0; i < categoryCount; i++) {
                    if (categories[i].equalsIgnoreCase(categoryName)) {
                        index = i;
                        break;
                    }
                }

                if (index == -1) {
                    System.out.println("Category not found!");
                } else {
                    break;
                }
            } while (true);

            for (int i = index; i < categoryCount - 1; i++) {
                categories[i] = categories[i + 1];
            }
            categoryCount--;

            System.out.print("Category deleted successfully!");
            do {
                System.out.print(" Do you want to delete another category (Y/N): ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        } while (true);
    }

    public static void updateItemCategory() {
        do {
            clearConsole();
            printTitle("UPDATE ITEM CATEGORY");

            if (categoryCount == 0) {
                System.out.println("\nNo categories found!");
                System.out.println("Press Enter to continue...");
                input.nextLine();
                return;
            }
            int index = -1;

            do {
                System.out.print("\nEnter Current Category Name: ");
                String currentName = input.nextLine();

                for (int i = 0; i < categoryCount; i++) {
                    if (categories[i].equalsIgnoreCase(currentName)) {
                        index = i;
                        break;
                    }
                }
                if (index == -1) {
                    System.out.println("Category not found! try again.");
                } else {
                    break;
                }
            } while (true);

            System.out.print("Enter New Category Name: ");
            String newName = input.nextLine();
            categories[index] = newName;
            System.out.print("Category updated successfully! ");
            do {
                System.out.print("Do you want to update another Category (Y/N): ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        } while (true);
    }

    public static void addItem() {
        do {
            clearConsole();
            printTitle("ADD ITEM");
            System.out.println();

            if (categoryCount == 0) {
                System.out.println("Oops! It seems you don't have any item categories in the system.");
                System.out.print("Do you want to add a new item category (Y/N): ");
                String choice = input.nextLine();
                if (choice.equalsIgnoreCase("Y")) {
                    addItemCategory();
                    return;
                } else {
                    return;
                }
            }

            if (supplierCount == 0) {
                System.out.println("Oops! No suppliers found!");
                System.out.print("Do you want to add a new supplier (Y/N): ");
                String choice = input.nextLine();
                if (choice.equalsIgnoreCase("Y")) {
                    addSupplier();
                    return;
                } else {
                    return;
                }
            }
            boolean exists;
            String itemCode;
            do {
                exists = false;
                System.out.print("Enter Item Code: ");
                itemCode = input.next();

                for (int i = 0; i < itemCount; i++) {
                    if (items[i][0].equals(itemCode)) {
                        System.out.println("Item code already exists! Try another.");
                        exists = true;
                    }
                }
            } while (exists);

            System.out.println();
            System.out.println("Supplier List:");
            System.out.println("+-----+---------------+------------------------------+");
            System.out.printf("|%-5s|%-15s|%-30s|", "NO", "SUPPLIER ID", "SUPPLIER NAME");
            System.out.println();
            System.out.println("+-----+---------------+------------------------------+");
            for (int i = 0; i < supplierCount; i++) {
                System.out.printf("|%-5d|%-15s|%-30s|", (i + 1), suppliers[i][0], suppliers[i][1]);
                System.out.println();
            }
            System.out.println("+-----+---------------+------------------------------+");

            int supplierNo;
            do {
                System.out.print("\nEnter Supplier Number > ");
                supplierNo = input.nextInt();

                if (supplierNo <= 0 || supplierNo > supplierCount) {
                    System.out.println("Invalid supplier number! Enter valid number.");
                } else {
                    break;
                }
            } while (true);

            System.out.println();
            System.out.println("Item Category List:");
            System.out.println("+-----+------------------------------+");
            System.out.printf("|%-5s|%-30s|", "NO", "CATEGORY NAME");
            System.out.println();
            System.out.println("+-----+------------------------------+");
            for (int i = 0; i < categoryCount; i++) {
                System.out.printf("|%-5d|%-30s|", (i + 1), categories[i]);
                System.out.println();
            }
            System.out.println("+-----+------------------------------+");

            int categoryNo;
            do {
                System.out.print("\nEnter Category Number> ");
                categoryNo = input.nextInt();

                if (categoryNo <= 0 || categoryNo > categoryCount) {
                    System.out.println("Invalid category number! Enter valid number.");
                } else {
                    break;
                }
            } while (true);

            input.nextLine();
            System.out.print("\nDescription: ");
            String description = input.nextLine();

            System.out.print("Unit Price: ");
            double unitPrice = input.nextDouble();

            System.out.print("Quantity on Hand: ");
            int quantity = input.nextInt();

            items[itemCount][0] = itemCode;
            items[itemCount][1] = suppliers[supplierNo - 1][0];
            items[itemCount][2] = categories[categoryNo - 1];
            items[itemCount][3] = description;
            items[itemCount][4] = String.valueOf(unitPrice);
            items[itemCount][5] = String.valueOf(quantity);
            itemCount++;

            System.out.print("Item added successfully! ");
            do {
                System.out.print("Do you want to add another item (Y/N): ");
                String yesOrNo = input.next();
                if (yesOrNo.equalsIgnoreCase("y")) {
                    break;
                } else if (yesOrNo.equalsIgnoreCase("n")) {
                    return;
                } else {
                    System.out.println("\nInvalid input ");
                }
            } while (true);
        } while (true);
    }

    public static void getItemsSupplierWise() {
        clearConsole();
        printTitle("ITEMS SUPPLIER WISE");
        System.out.println();

        if (supplierCount == 0) {
            System.out.println("No supplier found! Enter suppliers first.");
            System.out.println("Press Enter to continue...");
            input.nextLine();
            return;
        }
        boolean supplierExists;
        String supplierId;
        do {
            supplierExists = false;
            System.out.print("Enter Supplier ID: ");
            supplierId = input.next();

            for (int i = 0; i < supplierCount; i++) {
                if (suppliers[i][0].equals(supplierId)) {
                    System.out.println("Supplier Name : " + suppliers[i][1]);
                    supplierExists = true;
                    break;
                }
            }

            if (!supplierExists) {
                System.out.println("Supplier not found!");
            }
        } while (!supplierExists);

        System.out.println();
        System.out.println("+------------+--------------------+------------+----------+---------------+");
        System.out.printf("|%-12s|%-20s|%-12s|%-10s|%-15s|\n",
                "ITEM CODE", "DESCRIPTION", "UNIT PRICE", "QTY", "CATEGORY");
        System.out.println("+------------+--------------------+------------+----------+---------------+");

        boolean found = false; // This is the declaration that was missing
        for (int i = 0; i < itemCount; i++) {
            if (items[i][1].equals(supplierId)) {
                System.out.printf("|%-12s|%-20s|%-12s|%-10s|%-15s|\n",
                        items[i][0], items[i][3], items[i][4],
                        items[i][5], items[i][2]);
                found = true;
            }
        }
        System.out.println("+------------+--------------------+------------+----------+---------------+");

        if (!found) {
            System.out.println("No items found for this supplier!");
        }

        do {
            System.out.print(" Do you want to go supplier manage page (Y/N): ");
            String yesOrNo = input.next();
            if (yesOrNo.equalsIgnoreCase("y")) {
                return;
            } else if (yesOrNo.equalsIgnoreCase("n")) {
                System.exit(0);
            } else {
                System.out.println("\nInvalid input ");
            }
        } while (true);
    }

    public static void viewItems() {
        clearConsole();
        printTitle("VIEW ITEMS");
        System.out.println();

        if (itemCount == 0) {
            System.out.println("No items found!");
            System.out.println("Press Enter to continue...");
            input.nextLine();
            return;
        }

        for (int c = 0; c < categoryCount; c++) {
            String currentCategory = categories[c];
            boolean hasItems = false;

            for (int i = 0; i < itemCount; i++) {
                if (items[i][2].equalsIgnoreCase(currentCategory)) {
                    hasItems = true;
                    break;
                }
            }

            if (hasItems) {
                System.out.println();
                System.out.println("Category: " + currentCategory.toUpperCase());
                System.out.println("+------------+---------------+--------------------+------------+----------+");
                System.out.printf("|%-12s|%-15s|%-20s|%-12s|%-10s|\n",
                        "ITEM CODE", "SUPPLIER ID", "DESCRIPTION", "UNIT PRICE", "QTY");
                System.out.println("+------------+---------------+--------------------+------------+----------+");

                for (int i = 0; i < itemCount; i++) {
                    if (items[i][2].equalsIgnoreCase(currentCategory)) {
                        System.out.printf("|%-12s|%-15s|%-20s|%-12s|%-10s|\n",
                                items[i][0], items[i][1], items[i][3],
                                items[i][4], items[i][5]);
                    }
                }
                System.out.println("+------------+---------------+--------------------+------------+----------+");
            }
        }

        do {
            System.out.print("Do you want to go stock manage page (Y/N): ");
            String yesOrNo = input.next();
            if (yesOrNo.equalsIgnoreCase("y")) {
                return;
            } else if (yesOrNo.equalsIgnoreCase("n")) {
                System.exit(0);
            } else {
                System.out.println("\nInvalid input ");
            }
        } while (true);
    }

    public static void rankItemsPerUnitPrice() {
        clearConsole();
        printTitle("RANK ITEMS PER UNIT PRICE");
        System.out.println();

        if (itemCount == 0) {
            System.out.println("No items found!");
            System.out.println("Press Enter to continue...");
            input.nextLine();
            return;
        }

        // Create a copy of items array for sorting
        String[][] sortedItems = new String[itemCount][];
        for (int i = 0; i < itemCount; i++) {
            sortedItems[i] = items[i].clone();
        }

        // Bubble sort by unit price (ascending order)
        for (int i = 0; i < itemCount - 1; i++) {
            for (int j = 0; j < itemCount - 1 - i; j++) {
                double price1 = Double.parseDouble(sortedItems[j][4]);
                double price2 = Double.parseDouble(sortedItems[j + 1][4]);

                if (price1 > price2) {
                    // Swap items
                    String[] temp = sortedItems[j];
                    sortedItems[j] = sortedItems[j + 1];
                    sortedItems[j + 1] = temp;
                }
            }
        }

        System.out
                .println("+---------------+------------+--------------------+------------+----------+---------------+");
        System.out.printf("|%-15s|%-12s|%-20s|%-12s|%-10s|%-15s|\n",
                "SUPPLIER ID", "ITEM CODE", "DESCRIPTION", "UNIT PRICE", "QTY", "CATEGORY");
        System.out
                .println("+---------------+------------+--------------------+------------+----------+---------------+");

        for (int i = 0; i < itemCount; i++) {
            System.out.printf("|%-15s|%-12s|%-20s|%-12s|%-10s|%-15s|\n",
                    sortedItems[i][1], sortedItems[i][0], sortedItems[i][3],
                    sortedItems[i][4], sortedItems[i][5], sortedItems[i][2]);
        }
        System.out
                .println("+---------------+------------+--------------------+------------+----------+---------------+");

        do {
            System.out.print("Do you want to go stock manage page (Y/N): ");
            String yesOrNo = input.next();
            if (yesOrNo.equalsIgnoreCase("y")) {
                return;
            } else if (yesOrNo.equalsIgnoreCase("n")) {
                System.exit(0);
            } else {
                System.out.println("\nInvalid input ");
            }
        } while (true);
    }

    public static void printTitle(String title) {
        String line = "--------------------------------------------------------------------------------------------------";
        System.out.println("+" + line + "+");
        int before = (line.length() - title.length()) / 2;
        System.out.printf("|%" + before + "s", "");
        System.out.print(title);
        int after = (line.length() - title.length()) - before;
        System.out.printf("%" + after + "s", "");
        System.out.println("|");
        System.out.println("+" + line + "+");
    }

    public static void main(String[] args) {
        loginpage();
        homepage();
        input.close();
    }
}