class InheritanceTest{

  public static void main(String[] args){

    System.out.print("\n");

    /* Test of constructor methods */

    Base b1 = new Base();
    Base b2 = new Base(3);

    Sub s1 = new Sub();
    Sub s2 = new Sub(4);

    System.out.print("\n");

    /* Test of instance methods */

    b1.applyMethod();
    s1.applyMethod();

    b1 = s1;

    b1.applyMethod();
    s1.applyMethod();

    System.out.print("\n");

  }
}