OnJava8-Examples/interfaces/Basic2.java

// interfaces/Basic2.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.

abstract class Basic2 extends Basic {
  int f() { return 111; }
  abstract void g();
  // unimplemented() still not implemented
}