Get concrete Class realization from interface reference

Question

Is it possible in java to obtain ConcreetClass.class from interface reference ISomeInterface. I would like to avoid 'instance of' keyword.
On other words, is there:

ISomeInterface intRef = new ConcreetClass();
Class realization = intRef.getRealizationClass();
realization == ConcreetClass.class; // true

If java doesn't support this operation. Could you recommend me a way to deal with it?

Possible duplicate of [How can I get a list of all the implementations of an interface programmatically in Java?](http://stackoverflow.com/questions/347248/how-can-i-get-a-list-of-all-the-implementations-of-an-interface-programmatically) — eugenioy, Oct 22 '15 at 13:09

score 1 · Answer 1 · answered Oct 22 '15 at 13:09

1

You should be able to get the specific class of any object using the getClass() method.

answered Oct 22 '15 at 13:09

Danail Alexiev

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Sleiman Jneidi · Accepted Answer · 2015-10-22T13:49:47.767

1

getClass returns the class of the instance.

Class<? extends ISomeInterface> realization = intRef.getClass();
System.out.println(ConcreetClass.class.equals(realization)); //true

edited Oct 22 '15 at 13:49

answered Oct 22 '15 at 13:17

Sleiman Jneidi

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Is there also a way to downcast `realization` to the concrete class with this? – sschuberth Jul 07 '23 at 11:35

Get concrete Class realization from interface reference

2 Answers2