Is object overlay also inherited?

Question

When a class implements an interface, do subclasses inherit implemented interfaces? for example

class A implements Runnable
{
   public void run()
   {
     // do something
   }
}

class B extends A
{
   public static void main(String[] args)
   {
       new Thread(new B()).start(); //works
   }
}

Does this mean that implements clause is also inherited?

Answer 1

Class A IS-A Runnable and Class B IS-A A, so Class B IS-A RUNNABLE. Yes they do.

Answer 2

Yes, B both extends A and implements Runnable.

Answer 3

That's right. This is exactly how it works.

Answer 4

Of course. B is also Runnable due to parent B (A) is Runnable.