Java Reflection Problem | Java Community | Help. Code. Learn. | Page 1

stoic forge Dec 31, 2022, 5:48 AM

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For context, I'm coming from knowing c#, and I need to know if there is a way to get all classes that implement an abstract class.
I know how to do this in c#, but is there a built-in way to do this for Java?

Sorry if this is a somewhat nooby question, trying to expand my programming to different languages lately.

eternal flareBOT Dec 31, 2022, 5:48 AM

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slender ore Dec 31, 2022, 6:16 AM

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Hey Mytho, just for some clarification on your question are you saying that in a hypothetical statement lets say we have the classes Dog, Cat, and Bird that all inherit the abstract class Animal. You're wondering if there is a way to get a list of all classes that inherit Animal so in this case it would be [Dog, Cat, Bird]?

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If so, you could look into this library (though I've never personally used it for this exact case) however it may contain what you are looking for: https://github.com/ronmamo/reflections

GitHub

GitHub - ronmamo/reflections: Java runtime metadata analysis

Java runtime metadata analysis. Contribute to ronmamo/reflections development by creating an account on GitHub.

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I don't know of any way to exactly perform that action in native java though but maybe someone has a better solution

stoic forge Dec 31, 2022, 6:18 AM

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Yes, your hypothetical is correct.
I would need to get a list of all classes that inherit from ClassName.
I'll look into the library, thanks for the link.

#Java Reflection Problem