*JAVA CODE*

does not need an account number or anything. This a general ATM program.

take the following code (Bank Account class) and extend the class to Checking, Savings, and Retirement instead of it all being in the main class.

import java.util.Scanner;

public class BankAccount {

private double currentBal,previousBal;

private static char type;

public BankAccount(char type){

BankAccount.type = type;

}

public void deposit(double amount) {

previousBal = currentBal;

currentBal += amount;

}

public void withdraw(double amount) {

previousBal = currentBal;

currentBal -= amount;

}

public void transfer(BankAccount otherAccount,double amount){

otherAccount.deposit(amount);

this.withdraw(amount);

}

public double getCurrentBal(){

return currentBal;

}

public void setCurrentBal(double currentBal) {

this.currentBal = currentBal;

}

public double getPreviousBal() {

return previousBal;

}

public void setPreviousBal(double previousBal) {

this.previousBal = previousBal;}

public char getType() {

return type;

}

public void setType(char type) {

BankAccount.type = type;

}

public void bankFunctions(){

BankAccount savingsAcc = new BankAccount('S');

BankAccount checkingAcc = new BankAccount('C');

BankAccount retirementAcc = new BankAccount('R');

BankAccount[] accsArr = {savingsAcc,checkingAcc,retirementAcc};

Scanner scanner = new Scanner(System.in);

System.out.println("Enter the balance of your Savings account: ");

savingsAcc.setCurrentBal(scanner.nextDouble());

System.out.println("Enter the balance of your Checking account: ");

checkingAcc.setCurrentBal(scanner.nextDouble());

System.out.println("Enter the balance of your Retirement account: ");

retirementAcc.setCurrentBal(scanner.nextDouble());

System.out.println("Please enter: 1 for Withdrawal 2 for Deposit 3 for Transfer");

int choice = scanner.nextInt();

int accChoice = 0;

double amount = 0;

switch(choice) {

case 1:

System.out.println("Please select account to withdraw from: 1 for "

+ "Savings Account 2 for Checking Account 3 for Retirement Account");

accChoice = scanner.nextInt();

System.out.println("Enter amount to withdraw: ");

amount = scanner.nextDouble();

accsArr[accChoice-1].withdraw(amount);

break;

case 2:

System.out.println("Please select account to deposit into: 1 for "

+ "Savings Account 2 for Checking Account 3 for Retirement Account");

accChoice = scanner.nextInt();

System.out.println("Enter amount to deposit: ");

amount = scanner.nextDouble();

accsArr[accChoice-1].deposit(amount);

break;

case 3:

System.out.println("Please select from which account to transfer: 1 for "

+ "Savings Account 2 for Checking Account 3 for Retirement Account");

accChoice = scanner.nextInt();

System.out.println("Please select to which account to transfer: 1 for "

+ "Savings Account 2 for Checking Account 3 for Retirement Account");

int secondChoice = scanner.nextInt();

System.out.println("Enter amount to transfer: ");

amount = scanner.nextDouble();

accsArr[accChoice-1].transfer(accsArr[secondChoice-1], amount);

break;

}

System.out.println("Savings Account: "+savingsAcc.getCurrentBal());

System.out.println("Checking Account: "+checkingAcc.getCurrentBal());

System.out.println("Retirement Account: "+retirementAcc.getCurrentBal());

scanner.close();

}

public static void main(String[] args) {

BankAccount myBankAccount = new BankAccount(type);

myBankAccount.bankFunctions();

}

}