What is the output of the following Java program?

class Fruit $\{$

public string tostring$()\{$

return "Fruit";

$\}$

$\}//$Fruit

class Apple extends Fruit $\{$

public string tostring$()\{$

return "Apple";

$\}$

$\}//$Apple

public class Exam $\{$

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

Object $01=$ new Fruit $()$;

Fruit $02=$ new Apple$($