I have an error at this line of java program that methed getPrice in class book cannot be applied to given types. Required int

Question

if(BOOK1.getPrice() > BOOK2.getPrice())
{
BOOK1 . display();
}
else
{
BOOK2 . display();
}

Answer 1

I first post the full code but there are not enough lines

Answer 2

Getprice return price.