Reference no: EM132436270

Problem: Complete the GiftCard class shown below. A GiftCard keeps track of the current balance and the maximum balance. A gift card starts with a beginning balance. A GiftCard can be used to make a purchase, funds can be added to a GiftCard, and the balance can be checked at any time. The balance can never be negative. If the amount added to the card is $100 or more, a bonus of $10 is also added. (20 points)

public class GiftCard

{

     // declare instance variables

     // precondition: the starting balance is not negative

     // postcondition: all instance variables are initialized

     public GiftCard(double startBal)

     {

     }

     // postcondition: amount is subtracted from balance

     // if there are insufficient funds, the balance is set to zero and a message

     // is displayed to indicate how much of the transaction is still owed

     public void spendFunds(double amount)

     {

     }

     // postcondition: amount is added to balance, if the amount is at least 100 dollars,

     // 10 dollars is added

     public void addFunds(double amount)

     {

     }

     // postcondition: the current balance is returned

     public double checkBalance()

     {

     }

}