package com.auuzee.test1;

class A {
}

class B extends A {
}

public class Test1 {
  public static void main(String[] args) {

    A a = new A();
    B b = new B();
    A ba = new B();
    System.out.println("1-------------");
    System.out.println(A.class.isAssignableFrom(a.getClass()));
    System.out.println(B.class.isAssignableFrom(b.getClass()));
    System.out.println(A.class.isAssignableFrom(b.getClass()));
    System.out.println(B.class.isAssignableFrom(a.getClass()));
    System.out.println(A.class.isAssignableFrom(ba.getClass()));
    System.out.println(B.class.isAssignableFrom(ba.getClass()));
    System.out.println("2-------------");
    System.out.println(a.getClass().isAssignableFrom(A.class));
    System.out.println(b.getClass().isAssignableFrom(B.class));
    System.out.println(a.getClass().isAssignableFrom(B.class));
    System.out.println(b.getClass().isAssignableFrom(A.class));
    System.out.println(ba.getClass().isAssignableFrom(A.class));
    System.out.println(ba.getClass().isAssignableFrom(B.class));
    System.out.println("3-------------");
    System.out.println(Object.class.isAssignableFrom(b.getClass()));
    System.out.println(Object.class.isAssignableFrom("abc".getClass()));
    System.out.println("4-------------");
    System.out.println("a".getClass().isAssignableFrom(Object.class));
    System.out.println("abc".getClass().isAssignableFrom(Object.class));
  }
}