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Is this inheritance?

Arthur Blair
Ranch Hand

Joined: Sep 20, 2005
Posts: 71
I was hoping someone could set me straight on this inheritance / abstract class question. (Courtesy of Bruce Eckels Thinking in Java, again).

I have a private abstract static class Tester as an inner class in my ListPerformance class. As another variable, I have an array of Tester objects which receieve new anonymous classes as parameters.

Since you cannot instantiate an abstract class, when I say new Tester() and implement the abstract method test() in these anonymous classes, does that mean I am extending the Tester class without using the keyword extends?

Thoughts appreciated.

Paul Clapham

Joined: Oct 14, 2005
Posts: 19312

Arthur Blair
Ranch Hand

Joined: Sep 20, 2005
Posts: 71
So would it be correct to say: Each of the anonymous classes in the array is a subclass of the abstract Tester class, but since they are anonymous they don't need an explicit name or the keyword extends?
Jesper de Jong
Java Cowboy
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Joined: Aug 16, 2005
Posts: 14584

Yes again...

Java Beginners FAQ - JavaRanch SCJP FAQ - The Java Tutorial - Java SE 8 API documentation
I agree. Here's the link:
subject: Is this inheritance?