// Code from filename: Main.java

// abstract class
abstract class Main {

  public String fname = "John";

  public int age = 24;

  public abstract void study(); // abstract method

}

// Subclass (inherit from Main)

class Student extends Main {

  public int graduationYear = 2018;

  public void study() { // the body of the abstract method is provided here

    System.out.println("Studying all day long");

  }

}

// End code from filename: Main.java

// Code from filename: Second.java

class Second {

  public static void main(String[] args) {

    // create an object of the Student class (which inherits attributes and methods from Main)

    Student myObj = new Student();

    System.out.println("Name: " + myObj.fname);

    System.out.println("Age: " + myObj.age);

    System.out.println("Graduation Year: " + myObj.graduationYear);

    myObj.study(); // call abstract method

  }

}