sintassi
import java.lang.*;
public interface NameOfInterface
{
...}
esempio: interfracci Animal e suo utilizzo
interfaccia
interface Animal
{
public void eat();}
public void travel();
public void eat()}
{System.out.println("Mammal eats");}
public void travel()
{System.out.println("Mammal travels");}
public int noOfLegs()
{return 0;}
public static void main(String args[])
{MammalInt m = new MammalInt();}
m.eat();
m.travel();