abstract class extends abstract class

No.
Abstract class can have both an abstract as well as concrete methods.
A concrete class can only have concrete methods.
Even a single abstract method makes the class abstract.

Can a final class extends abstract class?

The answer is No.
Because if a class is defined final it cannot be overridden .
But if you create an abstract class then it should be overridden by the subclass .
Hence an abstract class cannot be final.

Can an abstract class extend a abstract class?

We can treat an abstract class as a superclass and extend it; its subclasses can override some or all of its inherited abstract methods.
If through this overriding a subclass contains no more abstract methods, that class is concrete (and we can construct objects directly from it).

19 juil. 2011 · Yes you can do it. And it is good practice if your child class adds more functionality. It allows to move toward specification. Your parent What is the importance of abstract class that extends from another Extending an abstract class - implementing abstract methodsAbstract class extends concrete class - java - Stack OverflowAbstract class extending concrete classes - java - Stack OverflowAutres résultats sur stackoverflow.comAutres questions

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