Answer:
No. private would mean that nobody could use it, which is not sensible.
Hierarchy of Interfaces
An interface can be an extension of another interface (but not an extension of a class):
public interface ExciseTaxable extends Taxable
{
double extraTax = 0.02;
double calculateExtra();
}
A complex hierarchy of interfaces can be constructed using this feature. This is an advanced feature which you will probably not need to use.
QUESTION 24:
Can a class extend an interface?
