How to extend a final class in Java

by

You can’t, basically. It looks like the developer who designed Bar intended for it not to be extended – so you can’t extend it. You’ll need to look for a different design – possibly one which doesn’t use inheritance so much… assuming you can’t change the existing code, of course.

(It’s hard to give more concrete advice without knowing more about the real goal here – the design of the overall system.)

More Related Contents:

  1. Change private static final field using Java reflection
  2. Behaviour of final static method
  3. private final static attribute vs private final attribute
  4. in what order are static blocks and static variables in a class executed? [duplicate]
  5. Getting value of public static final field/property of a class in Java via reflection
  6. Why isn’t a qualified static final variable allowed in a static initialization block?
  7. Should a “static final Logger” be declared in UPPER-CASE?
  8. Why are all fields in an interface implicitly static and final?
  9. Java static final values replaced in code when compiling?
  10. Java : in what order are static final fields initialized?
  11. JAVA- JFrame- non static method cannot be referenced from a static context [duplicate]
  12. Cannot refer to a non-final variable inside an inner class defined in a different method
  13. Mocking static methods with Mockito
  14. In laymans terms, what does ‘static’ mean in Java? [duplicate]
  15. What is the exact meaning of static fields in Java?
  16. Volatile vs Static in Java
  17. Static nested class in Java, why?
  18. Java Static vs Instance
  19. java: “final” System.out, System.in and System.err?
  20. Static versus non-static lock object in synchronized block
  21. List of useful environment settings in Java
  22. Is calling static methods via an object “bad form”? Why?
  23. Java `final` method: what does it promise?
  24. Calling static generic methods
  25. Thread safety of static blocks in Java
  26. What is the equivalent of Java static methods in Kotlin?
  27. When does static initialization happen?
  28. Creation of Objects: Constructors or Static Factory Methods
  29. Whats up with static memory in java?
  30. Initialize final variable before constructor in Java

Leave a Comment