File Account.java contains a definition for a simple bank account class with methods to withdraw, deposit, get the balance and account number, and return a String representation. Note that the constructor for this class creates a random account number. Save this class to your directory and study it to see how it works. Then modify it as follows:

Overload the constructor as follows:

public Account (double initBal, String owner, long number) - initializes the balance, owner, and account number as specified

public Account (double initBal, String owner) - initializes the balance and owner as specified; randomly generates the account number.

public Account (String owner) - initializes the owner as specified; sets the initial balance to 0 and randomly generates the account number.

Overload the withdraw method with one that also takes a fee and deducts that fee from the account.

File TestAccount.java contains a simple program that exercises these methods. Save it to your directory, study it to see what it does, and use it to test your modified Account class.

//************************************************************

// Account.java

//

// A bank account class with methods to deposit to, withdraw from,

// change the name on, and get a String representation

// of the account.

//************************************************************

public class Account

{

private double balance;

private String name;

private long acctNum;

//-------------------------------------------------

//Constructor -- initializes balance, owner, and account number

//-------------------------------------------------

public Account(double initBal, String owner, long number)

{

balance = initBal;

name = owner;

acctNum = number;

}

//-------------------------------------------------

// Checks to see if balance is sufficient for withdrawal.

// If so, decrements balance by amount; if not, prints message.

//-------------------------------------------------

public void withdraw(double amount)

{

if (balance >= amount)

balance -= amount;

else

System.out.println("Insufficient funds");

}

//-------------------------------------------------

// Adds deposit amount to balance.

//-------------------------------------------------

public void deposit(double amount)

{

balance += amount;

}

//-------------------------------------------------

// Returns balance.

//-------------------------------------------------

public double getBalance()

{

return balance;

}

//-------------------------------------------------

// Returns a string containing the name, account number, and balance.

//-------------------------------------------------

public String toString()

{

return "Name:" + name +

" Account Number: " + acctNum +

" Balance: " + balance;

}

}

//************************************************************

// TestAccount.java

//

// A simple driver to test the overloaded methods of

// the Account class.

//************************************************************

import java.util.Scanner;

public class TestAccount

{

public static void main(String[] args)

{

String name;

double balance;

long acctNum;

Account acct;

Scanner scan = new Scanner(System.in);

System.out.println("Enter account holder's first name");

name = scan.next();

acct = new Account(name);

System.out.println("Account for " + name + ":");

System.out.println(acct);

System.out.println(" Enter initial balance");

balance = scan.nextDouble();

acct = new Account(balance,name);

System.out.println("Account for " + name + ":");

System.out.println(acct);

System.out.println(" Enter account number");

acctNum = scan.nextLong();

acct = new Account(balance,name,acctNum);

System.out.println("Account for " + name + ":");

System.out.println(acct);

System.out.print(" Depositing 100 into account, balance is now ");

acct.deposit(100);

System.out.println(acct.getBalance());

System.out.print(" Withdrawing $25, balance is now ");

acct.withdraw(25);

System.out.println(acct.getBalance());

System.out.print(" Withdrawing $25 with $2 fee, balance is now ");

acct.withdraw(25,2);

System.out.println(acct.getBalance());

System.out.println(" Bye!");

}

}