public class A $\{$

static int $x=2$;

public

System.out.println$($x$)$;

$x++$;

$\}$

public A$($int x$)\{$

this$()$;

this. $x+=x$;

System.out.println$($x$)$;

$\}$

public int $x,$ int $y$

this $(x+y)$;

$\}$

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

$A$ al$=$new $A()$;

A a$2=$new $A(2)$;

A a$3=$ new $A(0,1)$;

$\}$

$\}$