class A

$\{$

int i;

$\}$

class B extends A

$\}$

int $j$;

void display$()$

t

super. $i=j+1$;

System,out, println$(j+""+$ i$)$;

$\}$

$\}$

class inheritance

$\{$

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

$\{$

$B$ obj $=$ new $B()$;

obj. $i=1$;

obj$+j=2$;

obj.display$()$;

$\}$

$\}$