Add and show only objects of a particular user in Java?

[ikkyizzy]

https://www.dropbox.com/s/wob0gfcaqbj6wys/usecase.jpg?dl=0
https://www.dropbox.com/s/owm2ja9d02xa16r/class.jpg?dl=0
https://www.dropbox.com/s/1bi6hawvtvix1nn/usecase1.jpg?dl=0
https://www.dropbox.com/s/nxouisah8chp73f/usecase2.jpg?dl=0

Above is my usecase diagram, class diagram, two usecases for the program.

and below is the my program code

Main class

package fttconsole;
 
import java.util.*;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
 
public class FTTConsole {
 
    static int choice;
    static FoodTruckTracker fd = new FoodTruckTracker();
 
    public static void main(String[] args) throws NumberFormatException, IOException {
        // Input from the use
        Scanner input = new Scanner(System.in);
        String line;
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));      
        // Exception handling 
        try {
            do {
                System.out.println("\t\t\t\t\t\t\t\t\t\t\t   FOOD TRUCK REGISTRATION");
                System.out.println("\t\t\t\t\t\t\t\t\t\t\t    ========================");
                System.out.println("");
                System.out.println("\t\t\t\t\t\t\t\t\t\t\t   01.SignUP  / LogIn");
                System.out.println("\t\t\t\t\t\t\t\t\t\t\t   02.Maintain Food Trucks");
                System.out.println("\t\t\t\t\t\t\t\t\t\t\t   03.View Food Truck Information"); 
                System.out.println("\t\t\t\t\t\t\t\t\t\t\t   04.Review Food Truck Information");   
                System.out.println("\t\t\t\t\t\t\t\t\t\t\t   05.QUIT ");
                // User enter choice       
                System.out.print("Enter Your Choice: ");
                line = br.readLine();
                choice = Integer.parseInt(line);
                switch (choice) {
                    case 1:
                        FoodTruckTracker.SignUp();
                        break;
                    case 2:
                        FoodTruckTracker.RecordFoodTruck();
                    case 3:
                     //1 FoodTruckTracker.ViewFoodTruckInfo();
                        break;
                    case 4:
                      //  System.out.println("THANK YOU!");
                        break;
                    case 5:
                        System.out.println("THANK YOU!");
                        break;
                }
            } while (choice != 5);
            // catch and throw an error msg and prompt to enter correctly.
        } catch (NumberFormatException e) {
            System.out.println("Please insert a number  1,  2  OR 3   as a choice.!!!");
            System.out.print("Enter Your Choice: ");
            line = br.readLine();
            choice = Integer.parseInt(line);
        }
    }// end main
}// end class
 
 

User Class

package fttconsole;
 
import java.util.ArrayList;
import java.util.Iterator;
 
 
public abstract class User {
    // variables
 
    private String username;
    private String password;
    private String fullName;
    private String email;
 
    // ArayList of users
    private ArrayList<User> users = new ArrayList<>();
 
    // no-arg constructor
    public User() {
    }
 
    // paramatized constructor
    public User(String username, String password, String fullName, String email) {
        this.username = username;
        this.password = password;
        this.fullName = fullName;
        this.email = email;
    }
 
    // Getters and Setters
    public String getUsername() {
        return username;
    }
 
    public void setUsername(String username) {
        this.username = username;
    }
 
    public String getPassword() {
        return password;
    }
 
    public void setPassword(String password) {
        this.password = password;
    }
 
    public String getFullName() {
        return fullName;
    }
 
    public void setFullName(String fullName) {
        this.fullName = fullName;
    }
 
    public String getEmail() {
        return email;
    }
 
    public void setEmail(String email) {
        this.email = email;
    }
 
    public ArrayList<User> getUsers() {
        return users;
    }
 
    public void setUsers(ArrayList<User> users) {
        this.users = users;
    }
 
    public void addUser(User userIn) {
        users.add(userIn);
    }
    // Search User By User Name
 
    public abstract User searchUserByName(String Name);
 
 
 
    // Search User by Password
 
    public abstract User searchUserPassword(String password) ;
 
 
 
      public boolean equals(FoodTruckOwner obj){
    boolean result=false;
    if (obj instanceof FoodTruckOwner){
        FoodTruckOwner rhs = (FoodTruckOwner)obj;
        if(this.getUsername().equals(rhs.getUsername()))
            result= true;
        else
            result= false;
    }
    return result;
}
 
 
 abstract  String getAverageRatings();
 
    // toString method
    @Override
    public String toString() {
        return "USER NAME : " + username + ", PASSWORD : " + password + ", FULL NAME : " + fullName + ", EMAIL :" + email;
    }
}
 
 

Customer class

package fttconsole;
 
import java.util.ArrayList;
import java.util.Iterator;
 
public class Customer extends User {
 
    private final ArrayList<Customer> customers = new ArrayList<>();
 
    //no-arg constructor
    public Customer() {
    }
 
    // paramatized constructor
    public Customer(String username, String password, String fullName, String email) {
        super(username, password, fullName, email);
    }
    // toString method
 
    @Override
    public Customer searchUserByName(String Name) {
        Iterator<Customer> itr = customers.iterator();
        while (itr.hasNext()) {
            Customer custobj = itr.next();
            if (!custobj.getUsername().equals(Name)) {
                System.out.println("User name don't exist.!!! Pls. Enter a Valid Username!");
            } else {
                return custobj;
            }
        }
        return null;
    }
 
   @Override
    public void addUser(User customerIn) {
        customers.add((Customer) customerIn);
    }
 
    @Override
    public  Customer searchUserPassword(String password) {
        Iterator<Customer> itr = customers.iterator();
        while (itr.hasNext()) {
            Customer custobj = itr.next();
            if (!custobj.getPassword().equals(password)) {
                System.out.println("Your password is incorrect.!!! Pls. Enter a correct password!");
 
            } else {
                return custobj;
            }
        }
        return null;
    }
 
    @Override
    public String toString() {
        return super.toString();
    }
 
    @Override
    String getAverageRatings() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
 
} // end Customer class
 
 

FoodTruckOwner class

 
package fttconsole;
 
import java.util.ArrayList;
import java.util.Iterator;
 
 
public class FoodTruckOwner extends User {
 
    // variables
    private String licenceNo;
    private ArrayList<FoodTruckOwner> foodtruckowners;
 
    private ArrayList<FoodTruck> truck_collection = new ArrayList<FoodTruck>() ;
 
 
    //no-arg constructor
    public FoodTruckOwner() {
        this.foodtruckowners = new ArrayList<>();
    }
 
    // pramatized constructor
    public FoodTruckOwner(String username, String password, String fullName, String email, String licenceNo) {
        super(username, password, fullName, email);
        this.foodtruckowners = new ArrayList<>();
        this.licenceNo = licenceNo;
    }
 
    // Setters and getters
    public String getLicenceNo() {
        return licenceNo;
    }
 
    public void setLicenceNo(String licenceNo) {
        this.licenceNo = licenceNo;
    }
 
 
    public ArrayList<FoodTruckOwner> getFoodtrucksOwners() {
    return foodtruckowners;
   }
 
 
    public void setFoodtruckOwners(ArrayList<FoodTruckOwner> foodtruckowners) {
        this.foodtruckowners = foodtruckowners;
    }
 
 public ArrayList<FoodTruck> getTruck_collection() {
    return truck_collection;
}
 
public void setTruck_collection(ArrayList<FoodTruck> Truck_collection) {
    this.truck_collection = Truck_collection;
}
 
 
    // toString method
 
 
 public void addTruck( FoodTruck truckObj){
    this.truck_collection.add(truckObj);
}   
 
 
 
    @Override
  public void addUser(User foodtruckOwnerIn) {
        foodtruckowners.add((FoodTruckOwner) foodtruckOwnerIn);
    }
 
 
    @Override
    String getAverageRatings() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }
 
 
 
    @Override
    public FoodTruckOwner searchUserByName(String Name) {
 
        Iterator<FoodTruckOwner> itr = foodtruckowners.iterator();
        while (itr.hasNext()) {
            FoodTruckOwner ownerobj = itr.next();
            if (!ownerobj.getUsername().equals(Name)) {
                System.out.println("You are not a Valid User!!! You must be a FoodTruck Owner"
                        + " to Add or Modify!!!");
            } else {
                return ownerobj;
            }
        }
        return null;
    }
 
 
    @Override
    public  FoodTruckOwner searchUserPassword(String password) {
        Iterator<FoodTruckOwner>itr = foodtruckowners.iterator();
        while (itr.hasNext()) {
            FoodTruckOwner ownerobj = itr.next();
            if (!ownerobj.getPassword().equals(password)) {
                System.out.println("Your password is incorrect.!!! Pls. Enter a correct password!");
 
            } else {
                return ownerobj;
            }
        }
        return null;
    }
 
        @Override
    public String toString() {
        return super.toString() + "\t Licence No: " + getLicenceNo();
    } 
 
}
 
 

FoodTruck class

package fttconsole;
 
 
import java.util.ArrayList;
import java.util.Iterator;
 
public class FoodTruck {
 
    // variables
    private int truckID = 0;
    private String truckName;
    private String location;
    private String foodType;
    private String status;
    // ArrayList of FoodTrucks
    private ArrayList<FoodTruck> foodtrucks = new ArrayList<>();
     private ArrayList<FoodTruckOwner> foodtruckOwner = new ArrayList<>();
 
    // no-arg constructor
        public FoodTruck() {
    }
 
    // paramatized constructor
    public FoodTruck(int truckID, String truckName, String location, String foodType, String status) {
        this.truckID = truckID;
        this.truckName = truckName;
        this.location = location;
        this.foodType = foodType;
        this.status = status;
    }
    public int getTruckID() {
        return truckID;
    }
 
    public void setTruckID(int truckID) {
        this.truckID = truckID;
    }
 
    public String getTruckName() {
        return truckName;
    }
 
    public void setTruckName(String truckName) {
        this.truckName = truckName;
    }
 
    public String getLocation() {
        return location;
    }
 
    public void setLocation(String location) {
        this.location = location;
    }
 
    public String getFoodType() {
        return foodType;
    }
 
    public void setFoodType(String foodType) {
        this.foodType = foodType;
    }
 
    public String getStatus() {
        return status;
    }
 
    public void setStatus(String status) {
        this.status = status;
    }
 
    public ArrayList<FoodTruck> getFoodtrucks() {
        return foodtrucks;
    }
 
    public void setFoodtrucks(ArrayList<FoodTruck> foodtrucks) {
        this.foodtrucks = foodtrucks;
    }
 
    public ArrayList<FoodTruckOwner> getFoodtruckOwner() {
        return foodtruckOwner;
    }
 
    public void setFoodtruckOwner(ArrayList<FoodTruckOwner> foodtruckOwner) {
        this.foodtruckOwner = foodtruckOwner;
    }
 
      public void addTruck( FoodTruck truckObj){
    this.foodtrucks.add(truckObj);
}  
 
 
 
    // Display all the Truck details by a particular user
 
    public void displayAllByTruckId(User userIn) {
        Iterator<FoodTruck> itr = foodtrucks.iterator();
        while (itr.hasNext()) {
            FoodTruck truckobj = itr.next();
            if (truckobj.getTruckID() != 0) {
 
                System.out.println("------------------------------------------------" + "\n"
                        + "TRUCK ID : " + truckobj.getTruckID() + "\n"
                        + "TRUCK NAME :" + truckobj.getTruckName() + "\n"
                        + "FOOD TYPE : " + truckobj.getFoodType() + "\n"
                        + "LOCATION : " + truckobj.getLocation() + "\n"
                        + "STATUS :" + truckobj.getStatus() + "\n"
                        + "------------------------------------------------");
            } else {
                System.out.println("No FoodTrucks added Yet!!!!");
            }
 
        }
    }
 
 
 
   public void searchTruckByUserId(int truckID) {
        Iterator<FoodTruck> itr = foodtrucks.iterator();
        while (itr.hasNext()) {
            FoodTruck truckobj = itr.next();
            if (truckobj.getTruckID() == truckID) {
                for (int i = 0; i < foodtrucks.size(); i++) {
                    System.out.println("Truck ID : " + foodtrucks.get(i).truckID + "\t\t" + "TRUCK NAME : " + foodtrucks.get(i).truckName);
                }
 
            }
 
        }
 
    }
 
 
      public FoodTruck searchTruckByTruckId(int truckID) {
        Iterator<FoodTruck> itr = foodtrucks.iterator();
        while (itr.hasNext()) {
            FoodTruck truckobj = itr.next();
            if (truckobj.getTruckID() == (truckID)) {
                return truckobj;
            }
        }
        System.out.println("There is No Truck By that ID..");
        return null;
    }
 
    @Override
    public String toString() {
        return "FoodTruck{" + "truckID=" + truckID + ", truckName=" + truckName + ", location=" + location + ", foodType=" + foodType + ", status=" + status + ", foodtrucks=" + foodtrucks + ", foodtruckOwner=" + foodtruckOwner + '}';
    }
 
}
 
 

FoodTruckTracker class

 
package fttconsole;
 
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
 
public class FoodTruckTracker {
 
    // Array List of users and foodtrucks
    static ArrayList<User> users = new ArrayList<>();
    static ArrayList<FoodTruck> foodtrucks = new ArrayList<>();
    // variables
    private static int truckId = 0;
    private static String location = "";
    private static String status = "";
    // Instance of class User and  FoodTruck
    static FoodTruck objFoodTruck = new FoodTruck();
    static User objCustomer = new Customer();
    static User objFoodTruckOwner = new FoodTruckOwner();
 
    //static User objUser2 = new  FoodTruckOwner();
    static Scanner sc = new Scanner(System.in);
 
    //no-arg constructor
    public FoodTruckTracker() {
 
    }
 
    // paramatized constructor
    public FoodTruckTracker(ArrayList<User> users, ArrayList<FoodTruck> foodtrucks, ArrayList<FoodTruckOwner> foodtruckowners) {
        FoodTruckTracker.users = users;
        FoodTruckTracker.foodtrucks = foodtrucks;
    }
// Getters and Setters
 
    public ArrayList<User> getUsers() {
        return users;
    }
 
    public void setUsers(ArrayList<User> users) {
        FoodTruckTracker.users = users;
    }
 
    public ArrayList<FoodTruck> getFoodtrucks() {
        return foodtrucks;
    }
 
    public void setFoodtrucks(ArrayList<FoodTruck> foodtrucks) {
        FoodTruckTracker.foodtrucks = foodtrucks;
    }
// Method SignUp User
 
    public static void SignUp() {
        System.out.println("\n \t  USER SIGN UP ");
        System.out.print("------------------------------------------------\n");
        System.out.print("--> Are You a  Customer(C) or Truck Owner(T)? :  ");
        String choice = sc.next();
        System.out.println();
        //If the user is a Customer Type
        if (choice.equalsIgnoreCase("C")) {
 
            sc.nextLine();
            // Enter username
            System.out.print("USER NAME : ");
            String username = sc.nextLine();
            // if user name  is greater than 20
            if (username.length() > 20) {
                do {    // error msg. Invalid input! until a correct value is entered.
                    System.out.println("Invalid Input!! Please Enter Username not greater than 20 character : ");
                    username = sc.nextLine();
                } while (username.length() > 20);
            }
            // User enter password    
            System.out.print("PASSWORD :");
            String password = sc.nextLine();
            // If password is not valid
            if (!passValid(password)) {
                do { // error msg. Invalid password! until a correct value is entered.
                    System.out.println("InValid Input!! Write a password greater than 6 character");
                    System.out.print("PASSWORD :");
                    password = sc.nextLine();
                } while (!passValid(password));
            }
            // Enter full name
            System.out.println("FULL NAME : ");
            String fullname = sc.nextLine();
            // if full name is greater than 20 character
            if (fullname.length() > 20) {
                do { //error msg. Invalid full name! until a correct value is entered.
                    System.out.println("Invalid Input!! Please Enter Fullname not greater than 20 character : ");
                    username = sc.nextLine();
                } while (username.length() > 20);
            }
            // Enter user email
            System.out.print("EMAIL  : ");
            String email = sc.nextLine();
            // if email is not valid
            if (!emailValid(email)) {
                do { // error msg. Invalid Email.! until a correct value is entered.
                    System.out.println("Invalid Input!! Please Enter email in the format [e-mail] : ");
                    System.out.print("EMAIL :");
                    email = sc.next();
                } while (!emailValid(email));
 
            }
            // new Customer is created
 
            System.out.println("------------------------------------");
            System.out.println("-->Are You sure You want to Save!! (Y/N)");
            String answer = sc.next();
            if (answer.equalsIgnoreCase("y")) {
                Customer cust = new Customer(username, password, fullname, email);
                objCustomer.addUser(cust);
                System.out.println("Customer added successfully .....");
 
                System.out.println(cust.toString());
 
                LogInAndUpdateCust();
 
            } else {
                System.out.println("Cancelled Information....");
 
            }
 
            // Else User is a Food Truck Owner
        } else if (choice.equalsIgnoreCase("T")) {
            // Enter user name
            sc.nextLine();
            System.out.print("USERNAME : ");
            String username = sc.nextLine();
            if (username.length() > 20) {
                do { // If username is not Valid.. error msg. until a correct one is entered.
                    System.out.print("Invalid Input!!. Please enter username not greater than 20");
                    System.out.println("USERNAME : ");
                    username = sc.nextLine();
                } while (username.length() > 20);
            } // Enter password
            System.out.print("PASSWORD :");
            String password = sc.nextLine();
            if (!passValid(password)) {
                do { // password is incorrect error msg. prompt to enter the correct value.
                    System.out.print("Not a Valid Password. Pls. Enter a password not less than 6 character!!");
                    System.out.println("PASSWORD :");
                    password = sc.nextLine();
                } while (!passValid(password));
            }
            // Enter full name
            System.out.print("FULL NAME :");
            String fullname = sc.nextLine();
            if (fullname.length() > 20) {
                do { // error msg. until a valid name is entered. 
                    System.out.print("Invalid Name. Name should not be more than  20 characters in length!!");
                    System.out.println("FULL NAME :");
                    fullname = sc.nextLine();
                } while (fullname.length() > 20);
            }
            // User enter email address
            System.out.print("EMAIL : ");
            String email = sc.nextLine();
            if (!emailValid(email)) {
                do { // error msg. until a valid email is entered.
                    System.out.println("InValid Email!! Write email in the format [e-mail]");
                    System.out.print("EMAIL :");
                    email = sc.nextLine();
                } while (!emailValid(email));
            } // Enter Licence Number
            System.out.print("ENTER LICENSE NO in the format -> L1111: ");
            String license = sc.nextLine();
            license = license.toUpperCase();
            // If licence in not valid
            if (!isValidLicence(license)) {
                do { // error msg. until a valid licence is entered.
                    System.out.println("InValid License!! Write License in the format -> L1111");
                    System.out.print("LICENSE :");
                    license = sc.nextLine();
                } while (!isValidLicence(license));
            }
            // New Truck  Owner is created.
            User ownerIn = new FoodTruckOwner(username,password,fullname,email,license);
            System.out.println("------------------------------------");
            System.out.println("-->Are You sure You want to Save!! (Y/N)");
            String answer = sc.next();
            if (answer.equalsIgnoreCase("Y")) {
                objFoodTruckOwner.addUser(ownerIn); // --------------------------------------------------------------> TruckOwners to a different list
                System.out.println("Truck Owner added successfully .....");
                System.out.println(ownerIn.toString());
                System.out.println();
 
                    LogInAndUpdateOwner();
 
            } else {
                System.out.println("Cancelled Information....");
            }
 
        } else {
            System.out.println("Enter either Customer(C) or Truck Owner (T)");
        }
    }
 
 
 
 
 
    public static void LogInAndUpdateCust() {
 
        // User Login  to the System Method
        System.out.println();
        System.out.println("------------------------------------------------------------------");
        System.out.println("--> Please LogIn to the System By Entering your Username and Password.");
        System.out.println();
        // Enter username
        System.out.print("Enter your username  : ");
        String username = sc.next();
        // user is searched
        User foundUser = objCustomer.searchUserByName(username);
        // if user found
        if (foundUser == null) {   // Enter password
            do{
                   System.out.print("Enter your username  : ");
                    username = sc.next();
                    foundUser = objCustomer.searchUserByName(username);
            }while(foundUser==null);
        }
 
              System.out.println("Enter your password :");
              String password = sc.next();
              User foundPass = objCustomer.searchUserPassword(password);
              // if  password is correct user LogIned.
 
              if(foundPass==null){
                  do{
                  System.out.println("Enter your password : ");
                  password  = sc.next();
                  foundPass = objCustomer.searchUserPassword(password);
                  }while(foundPass==null);
              }
                System.out.println("");
                System.out.println("You are Successfully LogIned.!!!!");
                // Option for the user to Modify the logIn details or Not
                System.out.println("--> Do you wants to Modify your LogIn details ??(Y)es   OR  (N)o :");
                String ans = sc.next();
                //if user wants to modify
                if (ans.equalsIgnoreCase("Y")) {
 
                    // User modify the details
                    System.out.print("Full  Name  :");
                    String newfullName = sc.next();
                    System.out.print("Email  : ");
                    String newEmail = sc.next();
                    System.out.print("password : ");
                    String newPassword = sc.next();
                    // user entered details is set and updated.
                    foundUser.setUsername(newfullName);
                    foundUser.setPassword(newPassword);
                    foundUser.setEmail(newEmail);
                    System.out.println("---------------------");
                    System.out.println("Updated Successfully!!");
 
                } else { // if user don't want to modify logout.
                    System.out.println("You are Logged Out");
                }
 
 
    }
 
    public static void LogInAndUpdateOwner() {
 
        // User Login  to the System Method
        System.out.println();
        System.out.println("------------------------------------------------------------------");
        System.out.println("--> Please LogIn to the System By Entering your Username and Password.");
        System.out.println();
        // Enter username
        System.out.print("Enter your username  : ");
        String username = sc.next();
        // user is searched
        User foundUser = objFoodTruckOwner.searchUserByName(username);
        // if user found
 
        if (foundUser == null) {   // Enter password
            do{
                   System.out.print("Enter your username  : ");
                    username = sc.next();
                    foundUser = objFoodTruckOwner.searchUserByName(username);
            }while(foundUser==null);
        }
 
              System.out.println("Enter your password :");
              String password = sc.next();
              User foundPass = objFoodTruckOwner.searchUserPassword(password);
              // if  password is correct user LogIned.
 
              if(foundPass==null){
                  do{
                  System.out.println("Enter your password : ");
                  password  = sc.next();
                  foundPass = objFoodTruckOwner.searchUserPassword(password);
                  }while(foundPass==null);
              }
                System.out.println("");
                System.out.println("You are Successfully LogIned.!!!!");
 
                // Option for the user to Modify the logIn details or Not
                System.out.println("--> Do you wants to Modify your LogIn details ??(Y)es   OR  (N)o :");
                String ans = sc.next();
                //if user wants to modify
                if (ans.equalsIgnoreCase("Y")) {
 
                    // User modify the details
                    System.out.print("Full  Name  :");
                    String newfullName = sc.next();
                    System.out.print("Email  : ");
                    String newEmail = sc.next();
                    System.out.print("password : ");
                    String newPassword = sc.next();
                    // user entered details is set and updated.
                    foundUser.setUsername(newfullName);
                    foundUser.setPassword(newPassword);
                    foundUser.setEmail(newEmail);
                    System.out.println("---------------------");
                    System.out.println("Updated Successfully!!");
 
                } else { // if user don't want to modify logout.
                    System.out.println("You are Logged Out");
                }
            }
 
 
 
    // Email Validator 
    public static Boolean emailValid(String email) {
 
        if (email.contains("@") || email.contains(".com")) {
            return true;
        } else {
            return false;
        }
    }
 
    // Password Validator
    public static Boolean passValid(String pass) {
        if (pass.length() > 6) {
            return true;
        } else {
            return false;
        }
    }
 
    //Licence Validator
    public static Boolean isValidLicence(String Licence) {
        int lengd = Licence.length();
        //Sé til thess ad bílnúmer getur ekki verid lengra en 5 stafir
        if (lengd > 5) {
            System.out.println("License  numbers can not be more then 5 characters");
        }
 
        Matcher m = Pattern.compile("[A-Z](\\d\\d)\\d\\d").matcher(Licence);
        if (m.find()) {
            return true;
 
        } else {
            return false;
        }
    }
 
    // Add Food Truck Method 
    public static void RecordFoodTruck() {
 
        //1. User Login to the System
           // Truck Owner Login  to the System Method
         System.out.println();
        System.out.println("------------------------------------------------------------------");
        System.out.println("--> Please LogIn to the System By Entering your Username and Password.");
        System.out.println();
        // Enter username
        System.out.print("Enter your username  : ");
        String username = sc.next();
        // user is searched
        User foundUser = objFoodTruckOwner.searchUserByName(username);
        // if user found
 
        if (foundUser == null) {   // Enter password
            do{
                   System.out.print("Enter your username  : ");
                    username = sc.next();
                    foundUser = objFoodTruckOwner.searchUserByName(username);
            }while(foundUser==null);
        }
 
              System.out.println("Enter your password :");
              String password = sc.next();
              User foundPass = objFoodTruckOwner.searchUserPassword(password);
              // if  password is correct user LogIned.
 
              if(foundPass==null){
                  do{
                  System.out.println("Enter your password : ");
                  password  = sc.next();
                  foundPass = objFoodTruckOwner.searchUserPassword(password);
                  }while(foundPass==null);
              }
                System.out.println("");
                System.out.println("You are Successfully LogIned.!!!!");
              System.out.println("*****************************************");
                System.out.println("Full Name  : " + foundUser.getFullName());
                System.out.println("Email : " + foundUser.getEmail());
              System.out.println("*****************************************");
 
              // show the list of foodTrucks belongs to the user if exist
           objFoodTruck.displayAllByTruckId(foundUser); // -------------------------------------------------------- A method to display foodtrucks belonging to 
           // to the user only.
        // 2. Add Food Truck Information
        System.out.println();
        System.out.println("---------------------------------------------\n");
        System.out.println("\n \t  RECORD FOOD TRUCK  INFORMATION ");
        System.out.print("------------------------------------------------\n");
        // Option to Add a Truck or Modify Food Truck.
        System.out.println("Do you want to (A)dd  Or  (M)odify Food Truck Information ?: ");
        String ans = sc.next();
        // If user wants to Add
 
        // if user wants to add a truck
        if (ans.equalsIgnoreCase("A")) {
 
            System.out.print("Truck ID : ");
            // truck Id is generated automatically and incremented as user add more trucks.
            truckId++;
            objFoodTruck.setTruckID(truckId);
            System.out.println(truckId);
            // User enter Truck Name
            System.out.print("Truck Name : ");
            String truckName = sc.next();
 
            // Truck location automatically set to unknown
            System.out.print("Truck Location  :");
            location = "unknown";
            objFoodTruck.setLocation(location);
            System.out.println(location);
            // User enter Food type
 
            System.out.print("Food Type : ");
            String foodType = sc.next();
            // User status automatically set to unknown
 
            System.out.print("Status : ");
            status = "unknown";
            objFoodTruck.setLocation(status);
            System.out.println(status);
            // A new Food truck is created
            FoodTruck foodtruck = new FoodTruck(truckId, truckName, location, foodType, status);
            // Food truck added to arraylist
           objFoodTruck.addTruck(foodtruck);// -----------------------------------------------------------Truck to be added to the found user
            System.out.println();
            System.out.println(foodtruck.toString());
            System.out.println();
            System.out.println("Truck  Added Successfully.");
            //If user wants to modify the  truck information                     
        } else if (ans.equalsIgnoreCase("M")) {
            //3. Method to  Modify Trucks Information
 
        } else {
            System.out.println("You should Enter  (A)dd or  (M)odify Only!! ");
        }
    }
 
}
 
 

My problem is in food Maintain foodtruck.. in the Menu choice.

user login by entering username and password. After login
the user foodtruckowner either add or modify.

When the foodtruckowner(which is a user) login the foodtrucks he has added will be shown. My problem is all
the foodtrucks is showing to the user..
I know this is a simple mistake.. I couln't solve it..

A help is most appreciated...
Thanks

[ikkyizzy]

Are there any guys!??

[chaarmann]

There are a lot of guys, but nobody wants to find the needle in the haystack first before he can start helping.
So please do us a favour and reduce your problem to the bare minimum, that means to around 10-20 lines of code that show the problem, instead of some thousand lines of code!