Big Java, Binder Ready Version: Early Objects
Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Chapter 12.2, Problem 6SC
Program Plan Intro

Coupling (Dependency between two classes):

  • The concept of coupling says that “A class depends on another if it uses object of that class”.
  • Example of coupling is as follows. Consider the classes “coin” and “CashRegister”.

//class for coin

public class Coin

{

public Coin(double aValue, String aName) { . . . }

public double getValue() { . . . }

. . .

}

//class for cash register

public class CashRegister

{

public void enterPayment(int coinCount, Coin coinType)

{ . . . }

. . .

}

  • The class “CashRegister” depends on the class “coin” because it needs the help of “coin” to determine the value of the payment.

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