Java generics - retrieve type

Question

public Interface Foo{...}

Is there a way to retrieve which T was given for an implementation of Foo?

For example,

Answer 1

There's. Look at [Javadoc for java.lang.Class#getGenericInterfaces()](http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Class.html#getGenericInterfaces()).

Like this:

public class Test1 {

    interface GenericOne {
    }

    public class Impl implements GenericOne {
    }

    public static void main(String[] argv) {
        Class c = (Class) ((ParameterizedType) Impl.class.getGenericInterfaces()[0]).getActualTypeArguments()[0];
        System.out.println(c);
    }
}