{

Demo()

{

this(80, 90); // Step 4: will call parameterized constructor of base class

System.out.println("Base class default constructor called"); // Step 6: will print this

}

Demo(int x, int y)

{

System.out.println("Base class parameterized constructor called"); // Step 5: print this

}

{

Prototype()

{

this("Java", "Python"); // Step 2: will call parameterized constructor of derived class

System.out.println("Derived class default constructor called"); // Step 8 will print this

}

Prototype(String str1, String str2)

{

super(); // Step 3: will call default constructor of base class

// we can also call parameterized constructor of base class using super(int, int)

System.out.println("Derived class parameterized constructor called"); // Step 7: will print this

}

{

public static void main(String args[])

{

Prototype my_example = new Prototype(); // Step 1: will call default constructor of derived class

}