Question

Java programming.
** Create Account class include:
1/ private long   accountNumber;
2/ private String firstName;
3/ private String lastName;
4/ private double balance;
5/ public Account(long accountNumber, String firstName, String lastName, double balance);
6/ get/set methods for all attributes.
7/ public boolean deposit(double amount);  
• deposit only if amount is greater than 10 but   less than 200, add the deposit   amount   to the   currentbalance.
• if deposit is   successful return true,   otherwise return false;
8/ public boolean withdrawal(double amount);
• withdraw money only if amount   is at least 10   less than the   balance, in other words, do not   let the   balance   go below 10.
• return true if the withdrawal   is successful,   return   false   if withdrawal   is not   successful.

** Create Test class include:
1/ import java.io.File;
2/ import java.io.FileNotFoundException;
3/ import java.util.Scanner;
4/ public static void main(String [] args) throws FileNotFoundException{}.
5/ public static void displayAccounts(Account[] acc){}.
6/ public static void applyRandomBonus(KhalafallaAccount[] acc){}.

The main method should do the following:
* Create an array of accounts of size 7.
* Read the file line by line and:
* Store the elements of a line into variables
* Use the variables to instantiate an account
* Populate (or add) the account into the array of accounts (note: do not use
collections or any .add method , add elements by index as we have learned)
* Loop to read the next line…
* At the end of your processing loop you will have an array of accounts
* Send the array to displayAccounts method
* Then send the array to applyRandomBonus method
* Then send the array once more to displayAccounts, the updated balance should be
reflected.
* *The displayAccounts method should do the following:
* Use a for each loop and the toString method of the account to display the accounts, the
toString should include all elements, including balance.
* *The applyRandomBonus method should to the following:
* Use a for each loop to iterate through the array and deposit a random bonus amount
(remember the Java random number generator) between 100 and 300 dollars… Call the
account deposit method.. the random number should be in your Test class, not the
deposit method in the account class.
* As you generate a random deposit amount, if the deposit was successful, print it out to
the console.

** Create data.txt include:
1/ Johnson Nell 98845255 28.00
2/ Kendrick Farwell 67854321 100.00
3/ Peter Jackson 55325678 400.00
4/ Layla Kerns 56789332 350.00
5/ London Parker 23412378 250.00

**OUTPUT:::
Account{accountNumber=98845255, firsName='Johnson', lastName='Nell', balance= 250.0}
Account{accountNumber=67854321, firsName='Kendrick', lastName='Farwell', balance= 340.0}
Account{accountNumber=55325678, firsName='Peter', lastName='Jackson', balance= 100.0}
Account{accountNumber=56789332, firsName='Layla', lastName='Kerns', balance= 350.0}
Account{accountNumber=23412378, firsName='London ', lastName='Parker', balance= 450.0}
bonus:317
bonus:110
bonus:122
bonus:157
bonus:341
Account{accountNumber=98845255, firsName='Johnson', lastName='Nell', balance= 567.0}
Account{accountNumber=67854321, firsName='Kendrick', lastName='Farwell', balance= 450.0}
Account{accountNumber=55325678, firsName='Peter', lastName='Jackson', balance= 222.0}
Account{accountNumber=56789332, firsName='Layla', lastName='Kerns', balance= 762.0}
Account{accountNumber=23412378, firsName='London ', lastName='Parker', balance= 791.0}

Answer 1

If you have any problem with the code feel free to comment.

Program

class Account{
  
   //instance variables
   private long accountNumber;
   private String firstName;
   private String lastName;
   private double balance;
  
   //constructor
   public Account(long accountNumber, String firstName, String lastName, double balance) {
       this.accountNumber = accountNumber;
       this.firstName = firstName;
       this.lastName = lastName;
       this.balance = balance;
   }

   //all getters and setters
   public long getAccountNumber() {
       return accountNumber;
   }

   public void setAccountNumber(long accountNumber) {
       this.accountNumber = accountNumber;
   }

   public String getFirstName() {
       return firstName;
   }

   public void setFirstName(String firstName) {
       this.firstName = firstName;
   }

   public String getLastName() {
       return lastName;
   }

   public void setLastName(String lastName) {
       this.lastName = lastName;
   }

   public double getBalance() {
       return balance;
   }

   public void setBalance(double balance) {
       this.balance = balance;
   }
  
   //deposit method
   public boolean deposit(double amount) {
       if(amount > 10 && amount < 200) {
           balance+=amount;
           return true;
       }
       return true;
   }
  
   //withdraw method
   public boolean withdraw(double amount) {
       if(balance-amount > 10) {
           balance -= amount;
           return true;
       }
       return false;
   }

   @Override
   public String toString() {
       return "Account [accountNumber=" + accountNumber + ", firstName=" + firstName + ", lastName=" + lastName
               + ", balance=" + balance + "]";
   }
}

---------------------------------------------------------------------------------------------------------------------------------------------------------

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

public class Test{
   public static void main(String[] args)throws FileNotFoundException {
       //change the size to 7 as there was only 5
       //accounts provided in the text file
       //so i put array size 5
       Account[] accounts = new Account[5];
       int index = 0;
      
       Scanner sc = new Scanner(new File("data.txt"));
      
       long accountNumber;
       String firstName, lastName;
       double balance;
      
       String line;
      
       //reading the file line by line
       while(sc.hasNext()) {
           line = sc.nextLine();
           String[] ar = line.split(" ");
          
           accountNumber = Long.parseLong(ar[2]);
           firstName = ar[0];
           lastName = ar[1];
           balance = Double.parseDouble(ar[3]);
          
           accounts[index++] = new Account(accountNumber, firstName, lastName, balance);
       }
      
       sc.close();
      
       displayAccount(accounts);
       applyRandomBonus(accounts);
       displayAccount(accounts);
      
   }
  
   //for displaying account
   public static void displayAccount(Account[] acc) {
       for(Account i: acc) {
           System.out.println(i);
       }
   }
  
   //for giving random bonus to the accounts
   public static void applyRandomBonus(Account[] acc) {
       for(Account i: acc) {
           double bonus = (int)(Math.random()*(300-100)+100);
           if(i.deposit(bonus)) {
               System.out.println("bonus:"+bonus);
           }
       }
   }
}

Output