CODEWITHSUNDEEP
javagenericsreflection
lencinhaus
lencinhaus

Reputation: 3185

Java reflection - get generic method from non-generic class

is it possible to get a generic (parametrized) method from a non-generic class through reflection? Here's a sample of what i want to do:

public interface GenericInterface<T> {
    public T publicMethod(T arg);
}

public class NonGenericClassWithGenericMethods {
    private <T> void privateMethod(GenericInterface<T> arg) {

    }
}

public class Generics {
    public static void main(String[] args) {
        try {
            NonGenericClassWithGenericMethods.class.getMethod("privateMethod", GenericInterface.class).setAccessible(true);
        }
        catch(Exception ex) {
            ex.printStackTrace();
        }
    }
}

If i run Generics, i get:

java.lang.NoSuchMethodException: NonGenericClassWithGenericMethods.privateMethod(GenericInterface)

Thanks everybody

Upvotes: 0

Views: 514

Answers (1)

Bozho
Bozho

Reputation: 597402

.getDeclaredMethod() should be used instead of .getMethod(), which returns only public ones.

Upvotes: 7

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