Question

Requirements:

•  Your Java class names must follow the names specified above. Note that they are case sensitive. See our template below.

•  BankAccount: an abstract class.

•  SavingAccount: a concrete class that extends BankAccount.

o The constructor takes client's firstname, lastname and social security number.

o The constructor should generate a random 6-digit number as the user account number.

o The initial balance is 0 and the annual interest rate is fixed at 1.0% (0.01).o The withdraw method signature is:

public boolean withdraw(double amount).

It returns true if the amount is less or equal to the balance. Otherwise, the withdraw attempt fails and outputs an error message.

o The deposit method signature is:public void deposit(double amount).

 CheckingAccount: a concrete class that extends BankAccount, also implements Payable interface.

o The constructor takes client's firstname, lastname, social security number and a 4-character pin (in String type).

o Similarily, the initial balance is 0 and its interest rate is fixed at 0.1% (0.001).

o In addition, a 7-digit account number is randomly generated for a new client.

o The withdraw method signature is:
public boolean withdraw(double amount).

It deducts the corresponding amount of money on the account balance and returns true if the amount is less or equal to the balance. Otherwise, the withdraw attempt fail s and outputs an error message.

o The deposit method signature is:public void deposit(double amount).

o The makePayment method signature is:
public boolean makePayment(double amount, String name, String

pin).

•  It returns true if the amount is less or equal to the balance. And a message is printed for the payment.

•  It returns false if the pin check fails.

•  Itreturnsfalseifthebalanceisnotsufficienttomakethepayment.

 GiftCard: a concrete class that implements Payable interface.

o The constructor takes the amount and a 4-character pin number.o The makePayment method signature is:

public boolean makePayment(double amount, String name, String pin).

•  It deducts the corresponding balance amount and returns true if the balance is sufficient and a confirmation messages is printed.

•  Otherwise, an error message should show the balance is not sufficient to make the payment.

 In each concrete class, you are required to override toString() method, which is orginally provided in Object class.

Program Template:

public abstract class BankAccount {

protected String firstname;
  protected String lastname;
  protected int ssn;

  // implement your code here
}

public interface Payable {
public boolean makePayment(double amount, String name, String pin);

}

public class SavingAccount extends BankAccount { private double interest;
private int acctNumber;
private double balance;

  // implement your code here
}

public class CheckingAccount extends BankAccount implements Payable { private double interest;
private int acctNumber;
private double balance;

  private String pin;

  // implement your code here
}

public class GiftCard implements Payable {
  private String pin;
  private double balance;

  // implement your code here
}

Answer 1

import java.util.Random;

//abstract BankAccount class

public abstract class BankAccount {
protected String firstname;
protected String lastname;
protected int ssn;

abstract boolean withdraw(double amount);
abstract void deposit (double amount);

}

// SavingAccount class
public class SavingAccount extends BankAccount {
private double interest;
private int acctNumber;
private double balance;

SavingAccount(String firstname, String lastname, int ssn){
    this.firstname= firstname;
    this.lastname= lastname;
    this.ssn=ssn;
   
    // It will generate 6 digit random Number.
   
    Random rnd = new Random();
acctNumber= 100000 + rnd.nextInt(899999);
    balance=0;
    this.interest=0.01;
   
  
   
   
}

public boolean withdraw (double amount){
if(balance>=amount){
    balance=balance-amount;
    System.out.println(" Amount Withdrawn");
    return true;
}
else{
    System.out.println("insufficient balance");
    return false;
}
   
}

public void deposit(double amount){
    balance=balance+amount;
}

public String toString(){
    return firstname + " "+ lastname+ " " + ssn +" "+ acctNumber+ " " + balance;
   
}
}

//CheckingAccount class

public class CheckingAccount extends BankAccount implements Payable {
private double interest;
private int acctNumber;
private double balance;
private String pin;
   CheckingAccount(String firstname, String lastname, int ssn, String pin){
     this.firstname=firstname;
     this.lastname=lastname;
     this.ssn=ssn;
     this.pin=pin;
     this.balance=0;
     this.interest=0.001;
    
     // It will generate 7 digit random Number.
   
    Random rnd = new Random();
    int acctNumber= 1000000 + rnd.nextInt(8999999);
   }
  
   public boolean withdraw (double amount){
if(balance>=amount){
    balance=balance-amount;
    System.out.println(" Amount Withdrawn");
    return true;
}
else{
    System.out.println("insufficient balance");
    return false;
}
   
}

public void deposit(double amount){
    balance=balance+amount;
}

   public boolean makePayment(double amount, String name, String pin){
     if(amount<=balance && this.pin==pin){
       balance=balance-amount;
       System.out.println("Payment made");
       return true;
     }
     else(amount<=balance && this.pin !=pin){
       System.out.println("Pin match failed");
       return false;
     }
    
     else{
       System.out.println("Insufficient balance");
       return false;
     }
   }
  
   public String toString(){
    return firstname + " "+ lastname+ " " + ssn +" "+ acctNumber+ " " + balance;
   
}

}

//GiftCard class

public class GiftCard implements Payable {
private String pin;
private double balance;


GiftCard(String pin, double balance){
    this.pin=pin;
    this.balance=balance;
}

public boolean makePayment(double amount, String name, String pin){
     if(amount<=balance && this.pin==pin){
       balance=balance-amount;
       System.out.println("Payment made");
       return true;
     }
     else(amount<=balance && this.pin !=pin){
       System.out.println("Pin match failed");
       return false;
     }
    
     else{
       System.out.println("Insufficient balance");
       return false;
     }
   }
  
   public String toString(){
  
    return balance +" ";

}
}