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In Java:

DATA TYPE CLASS

Create one data type class Account_yourLastName that hold the information of an account such as accountNumber (String), name (String), address (String), balance (float), interestRate(float) and beside the no-argument constructor, parameterized constructor, the class has method openNewAccount, method checkCurrentBalance, method deposit, method withdrawal, method changeInterestRate

REQUIREMENT - DRIVER CLASS Provide the application for the Bank Service that first displays the following menu to allow users

TASK2: CHECK CURRENT BALANCE Using the account object to access the method check checkCurrentBalance() to display the followi

TASK3: DEPOSIT -Display the message to ask and read how much money users deposit -Using the account object to access the meth

TASK4: WITHDRAW -Display the message to ask and read how much money users withdraw -Using the account object to access the me

TASKS: CHANGE INTEREST RATE Display the message and ask the new interest rate Use the account object to access the method cha

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Answer #1

I have Implemented BankService_Smith.java file which provide various services for the bank account by creating object of Account_Smith class and calling various methods of Account_Smith class.

Account_Smith Class:-

In this class, we have no-rg constructor but its body is empty because when we create the objevct of Account_Smith class using no-arg construcotr then the all data members of Account_Smith class intialize with its default value by automatically that's why no-arg construcotor does not have body.

class Account_Smith{
    
       // store account number
    String accountNumber;
    
    // store name of account holder
    String name;
    
    // store address of account holder
    String address;
    
    // store account balance
    float balance;
    
    // store interest rate
    float interestRate;
    
    
    // no- argument constructor
    public Account_Smith(){
      
        /*
            When constructor call then
            all the members intialize with its
            default value automatically.
        */
    }
    
    
    // parameterized constructor
    public Account_Smith(String accountNumber, String name, String address, float balance, float interestRate) {
        
        this.accountNumber = accountNumber;
        this.name = name;
        this.address = address;
        this.balance = balance;
        this.interestRate = interestRate;
    }
    
    
    public void openAccount(){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("NEW ACCOUNT");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.println("Account Name:\t\t"+name);
        System.out.println("Address:\t\t"+address);
        System.out.println("Interest Rate:\t\t"+interestRate+"%");
        System.out.printf("Start Balance:\t\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
    }
    
    
    public void checkCurrentBalance(){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("CHECK CURRENT BALANCE");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.printf("Start Balance:\t\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
    }
    
    
    public void deposit(float amount){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("DEPOSIT");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.printf("Balance:\t\t%.2f\n", balance);
        System.out.printf("Deposit:\t\t%.2f\n", amount);
        
        // deposit the amount into the account
        balance += amount;
        
        System.out.printf("Current Balance:\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
        
    }
    
    
    public void withdraw(float withdrawableAmount){
        
        // check valid amount or not
        float bal = balance - withdrawableAmount;
        
        if(bal >= 100){
            
            System.out.println("ONLINE BANK - JAMES SMITH");
            System.out.println("-----------------------------------------------");
            System.out.println("WITHDRAW");
            System.out.println("Account Number:\t\t"+accountNumber);
            System.out.printf("Balance:\t\t%.2f\n", balance);
            System.out.printf("Withdraw:\t\t%.2f\n", withdrawableAmount);

            // withdraw the balance from the account
            balance = bal;
            
            System.out.printf("Current Balance:\t%.2f", balance);
            System.out.println("\n-----------------------------------------------");
                    
        }else{
            
            System.out.println("ONLINE BANK - JAMES SMITH");
            System.out.println("-----------------------------------------------");
            System.out.println("WITHDRAW");
            System.out.println("Account Number:\t\t"+accountNumber);
            System.out.printf("Balance:\t\t%.2f\n", balance);
            System.out.printf("Withdraw:\t\t%.2f - denied\n", withdrawableAmount);
            System.out.printf("Current Balance:\t%.2f\n", balance);
            System.out.println("\n-----------------------------------------------");
            
        }
        
        
    }
    
    
    public void changeInterestRate(float newIntersetRate){
        
        // modify interest Rate
        interestRate = newIntersetRate;
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("CHANGE INTEREST RATE");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.println("Interest Rate:\t\t"+interestRate+"%");
        System.out.println("-----------------------------------------------");
        
    }
    
    
    public void bankStatement(){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("BANK STATEMENT");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.println("Account Name:\t\t"+name);
        System.out.println("Address:\t\t"+address);
        System.out.println("Interest Rate:\t\t"+interestRate+"%");
        System.out.printf("Balance:\t\t%.2f\n", balance);
        
        // calculate balance with updated interest Rate
        balance = balance + (balance * ((float)interestRate/100));
        
        System.out.printf("New Balance:\t\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
    }
    
}

Here, I attached BankService_Smith.java file which provide menu to the user and user can perform any task by selecting appropriate task number.

BankService_Smith.java file:-


import java.util.Scanner;

class Account_Smith{
    
       // store account number
    String accountNumber;
    
    // store name of account holder
    String name;
    
    // store address of account holder
    String address;
    
    // store account balance
    float balance;
    
    // store interest rate
    float interestRate;
    
    
    // no-argument constructor
    public Account_Smith(){
      
        /*
            When constructor call then
            all the members intialize with its
            default value automatically.
        */
    }
    
    
    // parameterized constructor
    public Account_Smith(String accountNumber, String name, String address, float balance, float interestRate) {
        
        this.accountNumber = accountNumber;
        this.name = name;
        this.address = address;
        this.balance = balance;
        this.interestRate = interestRate;
    }
    
    
    public void openAccount(){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("NEW ACCOUNT");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.println("Account Name:\t\t"+name);
        System.out.println("Address:\t\t"+address);
        System.out.println("Interest Rate:\t\t"+interestRate+"%");
        System.out.printf("Start Balance:\t\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
    }
    
    
    public void checkCurrentBalance(){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("CHECK CURRENT BALANCE");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.printf("Start Balance:\t\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
    }
    
    
    public void deposit(float amount){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("DEPOSIT");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.printf("Balance:\t\t%.2f\n", balance);
        System.out.printf("Deposit:\t\t%.2f\n", amount);
        
        // deposit the amount into the account
        balance += amount;
        
        System.out.printf("Current Balance:\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
        
    }
    
    
    public void withdraw(float withdrawableAmount){
        
        // check valid amount or not
        float bal = balance - withdrawableAmount;
        
        if(bal >= 100){
            
            System.out.println("ONLINE BANK - JAMES SMITH");
            System.out.println("-----------------------------------------------");
            System.out.println("WITHDRAW");
            System.out.println("Account Number:\t\t"+accountNumber);
            System.out.printf("Balance:\t\t%.2f\n", balance);
            System.out.printf("Withdraw:\t\t%.2f\n", withdrawableAmount);

            // withdraw the balance from the account
            balance = bal;
            
            System.out.printf("Current Balance:\t%.2f", balance);
            System.out.println("\n-----------------------------------------------");
                    
        }else{
            
            System.out.println("ONLINE BANK - JAMES SMITH");
            System.out.println("-----------------------------------------------");
            System.out.println("WITHDRAW");
            System.out.println("Account Number:\t\t"+accountNumber);
            System.out.printf("Balance:\t\t%.2f\n", balance);
            System.out.printf("Withdraw:\t\t%.2f - denied\n", withdrawableAmount);
            System.out.printf("Current Balance:\t%.2f\n", balance);
            System.out.println("\n-----------------------------------------------");
            
        }
        
        
    }
    
    
    public void changeInterestRate(float newIntersetRate){
        
        // modify interest Rate
        interestRate = newIntersetRate;
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("CHANGE INTEREST RATE");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.println("Interest Rate:\t\t"+interestRate+"%");
        System.out.println("-----------------------------------------------");
        
    }
    
    
    public void bankStatement(){
        
        System.out.println("ONLINE BANK - JAMES SMITH");
        System.out.println("-----------------------------------------------");
        System.out.println("BANK STATEMENT");
        System.out.println("Account Number:\t\t"+accountNumber);
        System.out.println("Account Name:\t\t"+name);
        System.out.println("Address:\t\t"+address);
        System.out.println("Interest Rate:\t\t"+interestRate+"%");
        System.out.printf("Balance:\t\t%.2f\n", balance);
        
        // calculate balance with updated interest Rate
        balance = balance + (balance * ((float)interestRate/100));
        
        System.out.printf("New Balance:\t\t%.2f", balance);
        System.out.println("\n-----------------------------------------------");
    }
    
}


// This class represents bank Service functionalities
public class BankService_Smith {
    
    public static void main(String[] args) {
        
        // create an object of Scanner class for user input
        Scanner sc = new Scanner(System.in);
        
        // declare object of Account_Smith class
        Account_Smith account = null;
        
        int ch = 0;
        do{
            
            System.out.println("\nONLINE BANK - JAMES SMITH");
            System.out.println("-----------------------------------------------");
            System.out.println("1. Open New Account");
            System.out.println("2. Check Current Balance");
            System.out.println("3. Deposit");
            System.out.println("4. Withdrawal");
            System.out.println("5. Change Interest Rate");
            System.out.println("6. Bank Statement");
            System.out.println("0. Exit");
            
            // get the user input from the user
            System.out.print("\nEnter your choice: ");
            ch = sc.nextInt();
            
            sc.nextLine();
            
            switch(ch){
                
                
                case 1 : 
                    // get the Account number from the user
                    System.out.print("Enter Account number: ");
                    String accountNumber = sc.nextLine();
                    
                    // get the name from the user
                    System.out.print("Enter Account Name: ");
                    String name = sc.nextLine();
                    
                    // get the address from the user
                    System.out.print("Enter Address: ");
                    String address = sc.nextLine();
                    
                    // get the interest rate from the user
                    System.out.print("Enter Interest Rate: ");
                    float interestRate = sc.nextFloat();
                    
                    // get the balance from the user
                    System.out.print("Enter Balance: ");
                    float balance = sc.nextFloat();
                    
                    sc.nextLine();
                    
                    // intialize the account object with above all the values
                    account = new Account_Smith(accountNumber, name, address, balance, interestRate);
                    
                    // now call the openAccount() method using Account_Smith class
                    account.openAccount();
                    
                    break;
                
                
                case 2:
                    
                    // check whether account is opened or not?
                    if(account == null){
                        System.out.println("Open New Account before selecting this task");
                        
                    }else{
                        // call the checkCurrentBalance() method for checking current balance of Account
                        account.checkCurrentBalance();
                    }
                    
                    break;
                    
                    
                case 3:
                    
                    // check whether account is opened or not?
                    if(account == null){
                        System.out.println("Open New Account before selecting this task");
                        
                    }else{

                        // get the deposit amount from the user
                        System.out.print("Please enter deposit amount : ");
                        float depositAmount = sc.nextFloat();

                        // call the deposit() method for depositing amount to the account
                        account.deposit(depositAmount);

                        sc.nextLine();
                    }
                    break;
                 
                    
                case 4:
                    
                    // check whether account is opened or not?
                    if(account == null){
                        System.out.println("Open New Account before selecting this task");
                        
                    }else{
                    
                        // get the withdraw amount from the user
                        System.out.print("Please enter amount for withdraw : ");
                        float withdrawableAmount = sc.nextFloat();

                        // call the withdraw(amount) method for withdrawing amount to the account
                        account.withdraw(withdrawableAmount);

                        sc.nextLine();
                    }
                    
                    break;
                
                    
                case 5:
                    
                    // check whether account is opened or not?
                    if(account == null){
                        System.out.println("Open New Account before selecting this task");
                        
                    }else{
                    
                        // get the interest rate from the user
                        System.out.print("Please enter interest rate : ");
                        float newInterestRate = sc.nextFloat();

                        // call the changeInterestRate(newInterestRate) method for updating Interest Rate
                        account.changeInterestRate(newInterestRate);

                        sc.nextLine();
                    }
                    
                    break;
                
                    
                case 6:
                    
                    // check whether account is opened or not?
                    if(account == null){
                        System.out.println("Open New Account before selecting this task");
                        
                    }else{
                        // call banStatement() method for printing bank statement
                        account.bankStatement();
                    }
                    break;
                
                    
                case 0:
                    // exit from the menu and program will terminate
                    break;
                    
                
                default:
                    System.out.println("\nPlease enter valid task number\n");
            }
            
        }while(ch != 0);
    }
    
}

Output:-

1> When user enter task(2 to 6) number before opening account.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

2> When user opening an account.

run: ONLINE BANK - JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate

3> When user check current balance.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

4> When user deposit amount to the account.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

5> When user withdraw invalid amount for withdraw process.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

6> When user withdraw valid amount for withdraw process.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

7> When user change the interest rate.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

8> When user want to display Bank statement.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

9> When user enter invalid task number.

ONLINE BANK JAMES SMITH 1. Open New Account 2. Check Current Balance 3. Deposit 4. Withdrawal 5. Change Interest Rate 6. Bank

I hope you will understand the Account_smith class and driver class.

Do you feel needful and useful then please upvote me.

Thank you.

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