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();
}
}