Textbook is #2 from the from the 2022 AP Computer Science A Free Response problems.

https://apcentral.collegeboard.org/pdf/ap22-frq-computer-science-a.pdf?course=ap-computer-science-a

Textbook class

public class Textbook extends Book
{
    private int edition;

    public Textbook(String bookTitle, double bookPrice, int edition)
    {
        super(bookTitle, bookPrice);
        this.edition = edition;
    }

    public int getEdition()
    {
        return edition;
    }

    public String getBookInfo()
    {
        return super.getBookInfo() + "-" + edition;
    }
    
    public boolean canSubstituteFor(Textbook otherTextbook)
    {
        return this.getTitle().equals(otherTextbook.getTitle()) &&
                this.getEdition() >= otherTextbook.getEdition();
    }
}

See Class writing order for a technique to respond to AP CS FR that request an entire class.

See Inheritance and polymorphism for details including how to write subclasses.

2022 AP CS Exam Free Response Solutions

• Game Free Response Solution
• ReviewAnalysis Free Response Solution
• Data Free Response Solution

Additional resources

• Primitive types vs references exercises
• Primitive types vs references exercises with calls
• ZombiePlant FR
• PirateParrot FR

Help & comments

Get help from AP CS Tutor Brandon Horn

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