Q$1.$ What is printed by the following code? Consider the polymorphic invocation. Verify your answer by writing

the code in your IDE $($e$.$g$.$ Eclipse$)$ and observing the output.

public class Practice$1\{$

Practice$1()\{$

Figure $f=$ new Figure$(()$ ;

Rectangle $r=$ new Rectangle$()$;

Box $b=$ new Box$()$;

f$.$display$()$;

$f=r$;

f$.$display$()$;

$f=b$;

$\}$

f$.$display$()$;

public static void main$($String$[]$ args$)\{$

new Practice$1()$;

$\}$

class Figure $\{$

$\}$

void display$()\{$System$.$out.println$("$Figure$")$; $\}$

class Rectangle extends Figure $\{$

void display$()\{$System$.$out.println$("$Rectangle$")$; $\}$

$\}$

class Box $\{$

void display$()\{$System$.$out.println$("$Box$")$; $\}$

$\}$

$\}$