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I saw the interface code today, was marked as default and had a body! What is this? The interface is completely abstract.

Reported as a duplicate by members of user194374, Community Spirit ♦ 5 Feb '17 at 19:22 .

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  • 3
    The interface is not a "completely abstract class". A class, even an abstract one, has a state (fields). The interface describes only the behavior (how the methods should look like). - Nofate ♦
  • You're right. Shildt was wrong :) - Flippy

1 answer 1

So like this. Now interfaces are entities with no fields. Those. You can implement methods that use constants, other methods of the interface, or static methods of other classes.