public class Main {
    class A { };
    class B extends A { };
    class C extends B { };

    private void run() {
        B b = new C();

        System.out.println(b instanceof A);
        System.out.println(A.class.isAssignableFrom(b.getClass()));
        System.out.println(B.class.isAssignableFrom(b.getClass()));
        System.out.println(C.class.isAssignableFrom(b.getClass()));
    }

    public static void main(String[] args) {
        new Main().run();
    }

}