Chapter 4, Problem 13RE

Explanation of Solution

Justification:

Refer the program “section_1/CashRegister.java” in Chapter 4

• In the give code, object is created for the class “CashRegister”. Then call the “recordPurchase ()” method with an argument.
  • This method adds the “purchase” value and “amount”. Here “purchase” value is 0 and “amount” value is “19.93”.
  • The result 19.93 is stored in the “purchase” variable.
• After that call “receivePayment ()” method with the arguments...

Explanation of Solution

Recommended code:

//declare the variable and call the method

double change = register.giveChange();

//calculate the “change” value

change *= 100;

//convert the data type

change = (int)(change);

//calculate the value

change /= 100;

//display the result

System.out...