is -a relationship

[nitin sharma]

interface i
{
}
public class nitin implements i
{

}

The above given code depict's the IS-A relationship or not.Answer in yes or no.

[Ajith Kallambella]

YES!

[rajashree ghatak]

could anyone explain why the answer is "yes" a little elaborately?
can't get how there can be is -a relationship between a class and interface.
rajashree.

[ratul banji]

But ...Ajith
If answer is YES...then wht. is 'is-like-a' relationship !!!
Just asking.
Ratul

[Ajith Kallambella]

public interface Edible
{
    public void Eat();
}
public class Seed
{
    ---
}
public class Fruit implements Edible
{
    Seed useless ;
     ---
     ---
}
public class Apple extends Fruit
{
     ---
     ---
}
public class BeerCan
{
}

• Fruit is-a Edible entity.
  
• Seed is not an Edible entity.
  
• Fruit has-a Seed.
  
• Apple is-a Fruit, is-a Edible entity and has-a Seed.
  
• BeerCan is not a Fruit.
  
• BeerCan is not an Edible entity.
  

There isn't really a is-like-a relationship, not a standard one atleast. The is-a relation sometimes can be interchanged with is-like-a for example - Apple is like a fruit. As a purist I don't agree with this description completely because is-like-a sounds like Apple is an incomplete Fruit, though it has many properties of the Fruit.
Cheers!

[nitin sharma]

Great,Excellent stuff by Ajith.