class implementing interface

[Cathy Song]

public interface AQuestion
{
void someMethod();
}
The class which implements AQuestion
1. Should have someMethod which must necessarily be public.
2. Should have someMethod which could be "friendly" or public
3. Should have someMethod which should not throw any checked exceptions.
4. Should have someMethod which cannot be sychronized as sychronized is not in the signature of the interface defination

I think none of the above would be true if an abstract class implements the interface.

  
    public interface AQuestion 
   { 
       void someMethod(); 
   } 
   
    abstract class A implements AQuestion {
   
   }

Any thoughts?

[Harwinder Bhatia]

Hi Cathy
Technically you might be correct but from the exam point of view, it might be expecting you to "assume" that the class implementing the interface is a concrete class.
Cheers
Harwinder

[Vad Fogel]

The question is worded poorly.