Question

Assignment 5 Purpose In this assignment, you will implement a class hierarchy in Java. Instructions The class hierarchy you will implement is shown below account Package Account manager Package SavingAccount CheckingAccount AccountManager The descriptions of each class and the corresponding members are provided below. Please note that the Visibility Modifiers (public, private and protected) are not specified and you must use the most appropriate modifiers Class AccountManager is a test main program. Create it so that it would completely test each of these classes and their corresponding methods. I will run my own main program against your code and it should pass. Successful completion of the project corresponds to it running without any error when it is executed by my code. Implementation Detail

code must be in java.

Answer 1

CODE IN JAVA:

Account.java file:

public class Account {

private static int nextAvailableAcctNumber = 0 ;

double bal ;

int number ;

public Account(double bal) {

this.bal = bal ;

this.number = nextAvailableAcctNumber ;

nextAvailableAcctNumber += 1 ;

}

public Account() {

this.bal = 0 ;

this.number = nextAvailableAcctNumber ;

nextAvailableAcctNumber += 1 ;

}

public Account(Account acct) {

this.bal = acct.bal ;

this.number = acct.number ;

}

void deposit(double amt) {

if(amt > 0)

bal += amt ;

}

public String toString() {

return "Account Number:"+number+" and Balance:"+bal;

}

boolean equals(Account thisAccount) {

if(this.number == thisAccount.number)

return true;

return false;

}

double getBal() {

return bal ;

}

int getAcctNumber() {

return number;

}

}

SavingAccount.java file:

public class SavingAccount extends Account{

private double rate ;

private static final double DEFAULT_RATE = 0.05;

private static final double DEFAULT_BAL = 1000.00;

public SavingAccount(double bal, double rate) {

super(bal);

this.rate = rate ;

}

public SavingAccount(double bal) {

super(bal);

this.rate = DEFAULT_RATE;

}

public SavingAccount() {

this(DEFAULT_BAL,DEFAULT_RATE);

}

public SavingAccount(SavingAccount acct) {

super(acct);

this.rate = acct.rate ;

}

double compound() {

double interest = this.bal * this.rate ;

this.bal += interest ;

return interest ;

}

double withd(double amt) {

if(amt <= bal) {

bal -= amt;

return amt ;

}

return 0 ;

}

public String toString() {

return super.toString() + "InterestRate :" + rate ;

}

double getRate() {

return rate ;

}

}

CheckingAccount.java file:

public class CheckingAccount extends Account{

double limit ;

double charge ;

private static final double DEFAULT_LIMIT = 1000.00;

private static final double DEFAULT_CHARGE = 2.00;

public CheckingAccount(double bal, double limit, double charge) {

super(bal);

this.limit = limit ;

this.charge = charge ;

}

public CheckingAccount(double bal) {

this(bal, DEFAULT_LIMIT, DEFAULT_CHARGE);

}

public CheckingAccount() {

this(DEFAULT_LIMIT,DEFAULT_LIMIT,DEFAULT_CHARGE);

}

public CheckingAccount(CheckingAccount acct) {

super(acct);

this.limit = acct.limit ;

this.charge = acct.charge ;

}

double withd(double amt) {

if(amt <= bal) {

bal -= amt;

if(bal < limit)

amt += charge ;

return amt ;

}

return 0 ;

}

public String toString() {

return super.toString() + "Minimum balance before a charge:" + limit + " and Charge per check if balance falls below the minimum balance:"+charge;

}

double getLimit() {

return limit;

}

double getCharge() {

return charge ;

}

}

NOTE : I didn't provide output. because there is no information for what to do in main method. They only asked implement the above classes.