Please run this code and let me know why it is throwing an error

Question

https://code.sololearn.com/cAqSUb1QR2hM/?ref=app

Answer 1

Change your methods like this.

public void discountedPrice()
{
double amount = price - (price*(discount/100));
System.out.println("Final price:"+amount);
}

public void displayDetails()
{
System.out.println("Isbn:"+isbn+"\nTitle:"+title+"\nAuthor:"+author+"\nOriginal price:"+price);

discountedPrice();
}