Data Structures and Algorithms in Java
Data Structures and Algorithms in Java
6th Edition
ISBN: 9781119278023
Author: Michael T. Goodrich; Roberto Tamassia; Michael H. Goldwasser
Publisher: Wiley Global Education US
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Chapter 2, Problem 20C

Explanation of Solution

Initial consideration:

There is a need to provide the modified version of theCreditCard class given in the code fragment 1.5 in the text book that contains

  • TheCreditCard class description needs to be modified in such a way that a customer is allocated a minimum monthly payment in the form of percentage of the balance.
  • The modified CreditCard class should also have the getBalance( ) methodas well to check the balance for a particular customer.

Modified version of CreditCard class:

The CreditCard class has to be modified that need to be referthe code fragment 1.5 given in the textbook which contains the CreditCardclass. This code is modified with the little change as follows.

  • Anew instance variable balance is used thathas private visibility, but a new protected method isadded, with signature setBalance(newBalance) to get the new updated balance for that particular customer.
  • Also the modified code has shown to implement the method called PredatoryCreditCard.processMonth()as follows:

Modified code:

//Class definition

public class CreditCard

{

  // Instance variables:

  private String customer; // name of the customer

  private String bank; // name of the bank

  private String account; // account identifier

  private int limit; // credit limit

  protected double newbalance;//The new updated balance

  protected double balance; // current balance

  // Constructors:

public CreditCard(String cust, String bk, String acnt, int lim, double initialBal)

  {

  customer = cust;

bank = bk;

account = acnt;

limit = lim;

//balance has private visibility

Private int balance = initialBal;

  }

public CreditCard(String cust, String bk, String acnt, int lim)

{

  // use a balance of zero as default

  this(cust, bk, acnt, lim, 0.0);

  }

  // New Accessor method

  public PredatoryCreditCard...

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