Do Interface hold object states

[ramya narayanan]

Interface skin
{
}

class Human implements skin
{
int hands;
int legs;
public static void main(String[] args)
{
Human sai=new Human();
sai.hands=2;
sai.legs=2;
}
}

In some other class I assign these sai instance to interface skin

skin s=(skin)sai;

Now when i'm assigning an object instance(sai) to an interface(skin) does the interface holds the object's states & methods.
Regards.

[rakesh sugirtharaj]

Well, you are just giving a reference. Still it is an object(at heart ). You can call 'sai' as sai or 'hey dude!' but he is still sai,right? A generel info here: Generally (and also logically) interfaces represent functionality. So usually you would have 'Skinnable' than 'skin'.

[Amit Ghorpade]

In addition, when a class implements an interface, the ISA relation is achieved.

Sometimes you'll come across code like

public void someMethod(Implementable impl)
{
//more code goes here
}
.
.
someMethod(AClass aObj);
...

where Implementable is an interface and AClass is a class that implements it.
[ November 05, 2008: Message edited by: Amit Ghorpade ]

[Campbell Ritchie]

Try it with the (skin) cast removed; it ought to make no difference to your application.