Tag: specific

I’m working on a programming project where you’re suppose to write a code for an online shopping store, i have two files one with products in it and the other with accounts information and i need to read these two and store them in ArrayList and another with type accounts,, shown below in the store class, and i’m also suppose to check whether the login info is matching or not

i’ve tried reading both files to list1 and list2 (which are array lists of String type) and it totally worked fine but when i got to the point where i’m suppose to check if username and password are valid i tried the following:

    int accountIndex=-1;      for (int i = 0; i < list2.size(); i++) {        if((list2.get(i).contains(username))&& (list2.get(i).contains(password))){                     accountIndex=0;                 }                  }                 if(accountIndex<0)                     System.out.println("Login Failed! Invalid Username and/or Password.\n"); 

but it didn’t work with all cases and had some bugs so my teacher told me to read files into the already existing array lists of products and accounts but i haven’t found a suitable way of doing it…

this is a sample of what the account file contain: 0001,Salam,1234,AbdulSalam Ahmad,1223 Sultanah – Medina,05555343535,salam@hotmail.com, 0002,Rawan,1111,Rawan Khaled,1223 Alaziziah – Medina,05555343435,rawan@hotmail.com,

//main:

     public static void main(String[] args) throws FileNotFoundException {       int ans;      // Craete a Store object      Store store = new Store("Camera Online Store");        // Read all products from the products file      ArrayList<String>list1=new ArrayList<String>();      File products = new File("Products.txt");       try(Scanner input = new Scanner(products);)       {        input.useDelimiter(",");        while(input.hasNext()){            list1.add(input.nextLine());        }       input.close();     }     // Read all accounts from the account file     File customerFile = new File("Accounts.txt");     ArrayList<String>list2=new ArrayList<String>();     try(Scanner input = new Scanner(customerFile);)       {       input.useDelimiter(",");        while(input.hasNext()){            list2.add(input.nextLine());       } input.close();               }      System.out.println("^^^^^^ Welcome to our "+store.getName()+" ^^^^^");     System.out.println("*****************************************");      while(true)     {     System.out.println("Are you a customer or an admin?\n  (1) for user \n  (2) for admin\n  (3) to exit");     Scanner sc = new Scanner (System.in);     int choice = sc.nextInt();         switch (choice) {             case 1: // customer mode                 System.out.println("Enter your login information.");                System.out.print("Username:");                String username = sc.next();                System.out.print("Password:");                String password = sc.next();                int accountIndex=-1;                 for (int i = 0; i < list2.size(); i++) {                  if((list2.get(i).contains(username))&& (list2.get(i).contains(password))){                     accountIndex=0;                 }                  }                 /*                     get the account index for this customer                 */                if(accountIndex<0)                     System.out.println("Login Failed! Invalid Username and/or Password.\n");                else{                     do                     {                         System.out.println("Choose the required operations from the list below:\n  (1) Display all products \n  (2) Add a product to your shopping cart by id \n  (3) View the products in your shopping cart \n  (4) Go to checkout\n  (5) Go back to main menu");    //Store class:     class Store{  private String name;  private ArrayList<Account> arracc;  private ArrayList<Products> arrprod;  public Store(){  } public void setArrAcc(Account x){     arracc.add(x); } public void setArrProd(Products x){    arrprod.add(x); } public Store(String name){     this.name=name; } public void addProduct(Products p){     arrprod.add(p); } public void deleteProduct(int id){     arrprod.remove(id);//id is the product index  } public void setName(String name){     this.name=name; } public String getName(){     return name; } 

}

//products class:  class Products{  private int productID;  private String name;  private String supplier;  private double price;   public Products(){   } public Products(int productID,String name,String supplier, double price){     this.productID=productID;     this.name=name;     this.supplier=supplier;     this.price=price; } public void setProductID(int ID){     productID=ID; } public void setName(String newName){     name=newName; } public void setSupplier(String newSupplier){     supplier=newSupplier; } public void setPrice(double newPrice){     price=newPrice; } public int getID(){     return productID; } public String getSupplier(){     return supplier; } public String getNAme(){     return name; } public double getPrice(){     return price; } public String toString(){     return" Product ID: "+productID+"\n -Product Name: "+name+"\n -Product Supplier: "+supplier+             "\n -Product Price: "+price+"\n ******************************************"; } 

}

any help would be much appreciated!!