Interfaces
Interfaces are similar to classes but they have all abstract methods.
It can be created using a keyword called interface. Using interfaces Java supports multiple inheritance indirectly.
Eg:
interface Colorable
{
public abstract void makeColorable( ) ;
}
Using interfaces
The interface can be used by the class by using keyword implements.
Example : Shape is a class, which has area().Circle is a subclass of Shape. We want to make Circle as colorable. The code can be given as follows :
class Circle extends Shape implements Colorable
{ …… }
