public class Test $\{$

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

$A$ a $=$ new $A()$;

a$.$print $()$;

$\}$

$\}$

class A $\{$

String $s$;

A$($String $s)1$

this.s $=s$;

$\}$

void print$()\{$

System.out.println$($s$)$

$\}$

$\}$

The program compiles and runs fine and prints nothing.

The program has a compile error because class $A$ is not a public class.

The program would compile and run if you change $Aa=$ new $A()$ to $Aa=$ new $").$

The program has a compile error because class A does not have a default constructor.