Sciomi uses Google Analytics to measure how the site is used. If you accept, it stores a cookie on your device. If you decline, it stores nothing on your device, but Google may still receive a basic signal that a page was opened. Sign-in and practice progress cookies are always used. No ads are shown. Details in the privacy policy

Interfaces & abstract classes

Computer Science · Java

Loading practice question…

About this practice set

Interfaces & abstract classes is a Computer Science quiz (Java) with 5 multiple-choice questions. Pick an answer and read the explanation that follows.

What you will be asked

  • An interface in Java:
  • A class implements an interface with:
  • An abstract class:
  • A class extends another with:
  • A class can implement: