About Question enthuware.ocpjp.v8.-2-.1827 :

[johnlong]

Hi

Explanation says:

You cannot override a static method with a non-static method and vice-versa.

Code: Select all

interface i1{
	static void m1(){}	
}

interface i2 extends i1{
	default void m1(){}
}

But it's possible to override static method with default one.

[admin]

What you have shown is not overriding. The concept of overriding applies only to instance method.

[zukras]

What "vice-versa" means in this context then? I guess I would suggest to choose different wording. Very confusing.

[admin]

It means you cannot override a non-static method with a static method either. The second line of the explanation already makes it very clear, " You can, however, redeclare a static method of a super interface as a default method in the sub interface."

[crazymind]

You can, however, redeclare a static method of a super interface as a default method in the sub interface.

How about redeclare a default method of a super interface as a static method in the sub interface? Option 1 seems correct ...

[admin]

What happened when you tried it out?

[crazymind]

What happened when you tried it out?

static String getId(){ return "AIN8888"; } }
^
overriding method is static


Why? I am trying to redefine default method to static method not overriding it.

[admin]

So you can see that it is not allowed. Rule of the language.

[bvrulez]

The explanation to the first (not correct) option is:

"You cannot override a static method with a non-static method. You can, however, redeclare a static method of a super interface as a default method in the sub-interface."

The option was to use "static String getId() {return "AIN8888"; }" to override "public default String...". So, the explanation refers to a different problem and is not fitting the option. The Explanation should say: "You cannot redeclare a default method as a static method in a sub-interface."

[admin]

You are right. Fixed.
thank you for your feedback!

[d0wnvk@gmail.com]

You are right. Fixed.

Not fixed.
The latest version of question bank is 1/81.

[admin]

It is fixed. The explanation says, "You cannot override a non-static method with a static method and vice versa.". The last part was not there earlier.