import java.util.$*$;

class Arraylists

$\{$

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

$\{$

Arraylists obj $=$ new ArrayLists $()$;

obj.add$("$A$")$;

obj.add $("$ B$")$;

obj $.$ add $("$ C$")$;

obj.add$(1,"$D$")$;

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

$\}$

$\}$