Untitled

import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
import java.io.PrintWriter;


class CPTRusanth {
   public static void main(String[] args) throws FileNotFoundException {
   
   
      OpenSave opensave = new OpenSave();
      Management manage = new Management();
     
     
      opensave.invData();
      opensave.cusData();
      manage.InvManagement();
      
     
   }// close main
}// close class     
           
           
class Inventory { //begin Inventory class

   Inventory(int id,double price, int quantity, String description)
   {//begin constructor inventory
   
   
      this.id = id;
      this.price = price;
      this.quantity = quantity;
      this.description = description; 
   }//end constructor inventory


//attributes
   private int id;
   private double price;
   private int quantity;
   private String description;

//setters
   public int getId(){
      return id;
   }
   public int getQty(){
      return quantity;
   }
   public double getPrice(){
      return price;
   }
   public String getDesc(){
      return description;
   }
//getters
   public void setId(int pid){
      id = pid;
   }

   public void setQty(int quant){
      quantity = quant;
   }

   public void setPrice(double money){
      price = money;
   }

   public void setDesc(String about){
      description = about;
   }
} // end inventory class



class Customer { // begin customer class

   Customer(int id, String firstName, String lastName, String phoneNumber)
   {//begin constructor inventory
   
      this.id = id;
      this.firstName = firstName;
      this.lastName = lastName;
      this.phoneNumber = phoneNumber;
       
   }//end constructor inventory

//attributes
   private int id;
   private String firstName;
   private String lastName;
   private String phoneNumber;

//setters
   public int getId(){
      return id;
   }
   public String getfirstName(){
      return firstName;
   }
   public String getlastName(){
      return lastName;
   }
   public String phoneNumber(){
      return phoneNumber;
   }
//getters
   public void setId(int Idenity){
      id = Idenity;
   }

   public void setfirstName(String first){
      firstName = first;
   }

   public void setlastName(String last){
      lastName = last;
   }

   public void setphoneNumber(String numberPhone){
      phoneNumber = numberPhone;
   }


} // end customer class

class OpenSave {//begin OpenSave class

   static ArrayList <Inventory> Inventoryarr = new ArrayList <> ();
   static ArrayList <Customer> Customerarr = new ArrayList <> ();

   public void invData()  throws FileNotFoundException {// begin InvData() method
   
   
      Scanner uI = new Scanner(System.in);
      File inventory = new File("InventoryData.txt");
   
        //Creates an object called fileName to deal with the file defined in its constructor.
        
        
      Scanner fileContents = new Scanner (inventory); //Contents of fileName are placed in the scanner.
   
      
   
      Scanner fileLine = new Scanner(fileContents.nextLine()); 
         
   
      while (fileLine.hasNextLine())
      {
         
         Inventoryarr.add(new Inventory(fileLine.nextInt(),fileLine.nextDouble(),fileLine.nextInt(),fileLine.nextLine()));
       
      }
      
      
   } //end InvData () mehtod
      
   public void cusData() throws FileNotFoundException {// begin cusData
      
      Scanner uI = new Scanner(System.in);
      
      
      int Id = 0;    
      int x = 0;
      while (x == 0) {
         System.out.printf("Please Enter your Id: ");
         Id = uI.nextInt();
         if (Id > 999 && Id < 10000) {
            x++;
         } else {
            System.out.println("\n[<!>] ERROR! [<!>] Please Insure your Id is a 4 Digit Number\n");
         }
      }
      System.out.printf("\nPlease Enter your First Name: ");
      String firstName = uI.next();
      System.out.printf("\nPlease Enter your Last Name: ");
      String lastName = uI.next();
      System.out.print("\nPlease Enter Your Phone Number: ");
      String phoneNumber = uI.next();
   
     
      File customerData = new File ("CustomerData.txt");
      Scanner diskScanner = new Scanner (customerData);
      PrintWriter diskWriter = new PrintWriter("DataTmp.txt"); 
      File fileNameNew = new File ("DataTmp.txt");     
      String oldFileContents=new String();
   
      while (diskScanner.hasNextLine()) {
         oldFileContents= oldFileContents + diskScanner.nextLine()+"\n";
      }//end while     
   
   
      diskWriter.println(oldFileContents + Id + " " +firstName+ " " +lastName+ " " +phoneNumber);
     
   
      diskScanner.close();
      diskWriter.close();
     
      customerData.delete(); 
      fileNameNew.renameTo(customerData);
     
     
      File customer = new File("CustomerData.txt");
   
            
        
      Scanner customerContents = new Scanner (customer); //Contents of fileName are placed in the scanner.
   
      
   
      Scanner CustomerFileLine = new Scanner(customerContents.nextLine());
      
      while (CustomerFileLine.hasNextLine())
      {
         
         Customerarr.add(new Customer(CustomerFileLine.nextInt(),CustomerFileLine.next(),CustomerFileLine.next(),CustomerFileLine.next()));
      }
   }// end CusData() Method

   public static ArrayList<Inventory> getInventory () {
      return Inventoryarr;
   }
}// end OpenSave

class Management {// begin class InvManagement 

   public void InvManagement() {//begin Invmanagement
   
      ArrayList <Inventory> Invman = OpenSave.getInventory();
   
   
   
      Invman.add(new Inventory(2233,5.55,400,"la"));
      
      
      System.out.printf(Invman.get(3).getDesc() );
      
      
    
   }// close InvManagement
 
 

}// end InvManagement