Modify Payment class to be made abstract, change it to abstract class. Also Make

Question

Modify Payment class to be made abstract, change it to abstract class. Also Make CashPayment method and CreditCardPayment method an abstract method. And he also wants me to test my main method to ensure that it still operates as expected.

Thanks.

Here's my code:

class Payment
{
private double amount;

public Payment( )
{
amount = 0;
}
public Payment(double amount)
{
this.amount = amount;
}
public void setPayment(double amount)
{
this.amount = amount;
}
public double getPayment( )
{
return amount;
}
public void paymentDetails( )
{
System.out.println("The payment amount is " + amount);
}
}
class CashPayment extends Payment
{
public CashPayment( )
{
super( );
}
public CashPayment(double amt)
{
super(amt);
}
public void paymentDetails( )
{
System.out.println("The cash payment amount is "+ getPayment( ));
}
}
class CreditCardPayment extends Payment
{
private String name;
private String expiration;
private String creditcard;
public CreditCardPayment()
{
super( );
name = " ";
expiration = " ";
creditcard = "";
}
public CreditCardPayment(double amt, String name, String expiration, String creditcard)
{
super(amt);
this.name = name;
this.expiration = expiration;
this.creditcard = creditcard;
}
public void paymentDetails( )
{
System.out.println("The credit card payment amount is " + getPayment( ));
System.out.println("The name on the card is: " + name);
System.out.println("The expiration date is: " + expiration);
System.out.println("The credit card number is: " + creditcard);
}
}
class Question1Payment
{
public static void main(String[ ] args)
{
CashPayment cash1 = new CashPayment(50.5), cash2 = new CashPayment(20.45);
CreditCardPayment credit1 = new CreditCardPayment(10.5, "Fred", "10/5/2010",
"123456789");
CreditCardPayment credit2 = new CreditCardPayment(100, "Barney", "11/15/2009",
"987654321");
System.out.println("Cash 1 details:");
cash1.paymentDetails( );
System.out.println( );
System.out.println("Cash 2 details:");
cash2.paymentDetails( );
System.out.println( );
System.out.println("Credit 1 details:");
credit1.paymentDetails( );
System.out.println( );
System.out.println("Credit 2 details:");
credit2.paymentDetails( );
System.out.println( );
}
}

Explanation / Answer

public abstract class Payment
{
private double amount;

public Payment( )
{
amount = 0;
}
public Payment(double amount)
{
this.amount = amount;
}
public void setPayment(double amount)
{
this.amount = amount;
}
public double getPayment( )
{
return amount;
}
public void paymentDetails( )
{
System.out.println("The payment amount is " + amount);
}
}
public class CashPayment extends Payment
{
public CashPayment( )
{
super( );
}
public CashPayment(double amt)
{
super(amt);
}
public void paymentDetails( )
{
System.out.println("The cash payment amount is "+ getPayment( ));
}
}
public class CreditCardPayment extends Payment
{
private String name;
private String expiration;
private String creditcard;
public CreditCardPayment( )
{
super( );
name = " ";
expiration = " ";
creditcard = "";
}
public CreditCardPayment(double amt, String name, String expiration, String creditcard)
{
super(amt);
this.name = name;
this.expiration = expiration;
this.creditcard = creditcard;
}
public void paymentDetails( )
{
System.out.println("The credit card payment amount is " + getPayment( ));
System.out.println("The name on the card is: " + name);
System.out.println("The expiration date is: " + expiration);
System.out.println("The credit card number is: " + creditcard);
}
}

class Question1Payment
{
public static void main(String[ ] args)
{
CashPayment cash1 = new CashPayment(50.5), cash2 = new CashPayment(20.45);
CreditCardPayment credit1 = new CreditCardPayment(10.5, "Fred", "10/5/2010",
"123456789");
CreditCardPayment credit2 = new CreditCardPayment(100, "Barney", "11/15/2009",
"987654321");
System.out.println("Cash 1 details:");
cash1.paymentDetails( );
System.out.println( );
System.out.println("Cash 2 details:");
cash2.paymentDetails( );
System.out.println( );
System.out.println("Credit 1 details:");
credit1.paymentDetails( );
System.out.println( );
System.out.println("Credit 2 details:");
credit2.paymentDetails( );
System.out.println( );
}
}

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