public$$class$$Store$\{$

public$$static$$ArrayList$$users;$//$ creating the array lists.

public$$static$$ArrayList$$storeitems;

$//$ a method to save array list to file

public$$static$$void$$saveInfo$($ArrayList$$users$,$ArrayList$$storeitems$,$String$$bagstore$)$

throws$$IOException$\{$

FileWriter$$ef$=$null;

try$\{$

ef$=$new$$FileWriter$($bagstore$)$;

for$($Users$$u$$:$$users$)\{$

ef$.$write$($u$.$toString$())$;

ef$.$write$($System$.$lineSeparator$())$;

$\}$

ef$.$write$($System$.$lineSeparator$())$;

ef$.$write$("--------------------")$;

ef$.$write$($System$.$lineSeparator$())$;

for$($StoreItems$$s$$:$$storeitems$)\{$

ef$.$write$($s$.$toString$())$;

ef$.$write$($System$.$lineSeparator$())$;

$\}$

$\}$finally$\{$

if$($ef$!=$null$)\{$

ef$.$close$()$;

$\}$

$\}$

$\}$

$//$ checking the users id and password

public$$static$$Users$$authenticate$($int$$Id$,$String$$Name$,$String$$password$)\{$

for$($Users$$user$$:$$users$)\{$

if$($user$.$getId$()==$Id$$&&$$user$.$equals$($Name$)$&&$$user$.$Password$($password$))\{$

return$$user;

$\}$

$\}$

return$$null;

$\}$

$//$ checking the users id and password $($customer$)$

public$$static$$Users$$authenticate$2($int$$Id$,$String$$Name$)\{$

for$($Users$$user$$:$$users$)\{$

if$($user$.$getId$()==$Id$$&&$$user$.$equals$($Name$))\{$

return$$user;

$\}$

$\}$

return$$null;

$\}$

$//$ lists the items

public$$static$$ArrayList$$ItemsByCategory$($String$$category$)\{$

ArrayList$$ByCategory$=$new$$ArrayList$<>()$;

for$($StoreItems$$Item$$:$$storeitems$)\{$

if$($Item$.$getCategory$().$equals$($category$))\{$

ByCategory.add$($Item$)$;

$\}$

$\}$

return$$ByCategory;

$\}$

$//$ search an item

public$$static$$ArrayList$$searchItems$($String$$searched$)\{$

ArrayList$$search$=$new$$ArrayList$<>()$;

for$($StoreItems$$Item$$:$$storeitems$)\{$

if$($Item$.$getName$().$toLowerCase$().$contains$($searched$.$toLowerCase$()))\{$

search.add$($Item$)$;

$\}$

$\}$

return$$search;

$\}$

$//$ adds an item to the array list

public$$static$$ArrayList$$addItem$($String$$name$,$double$$price$,$String$$category$,$String$$color$)\{$

StoreItems$$add$=$new$$StoreItems$($name$,$price$,$category$,$color$)$;

storeitems.add$($add$)$;

return$$storeitems;

$\}$

$//$ creates a new customer account

public$$static$$ArrayList$$createCustomerAcc$($int$$Id$,$String$$Name$)\{$

Users$$customer$=$new$$Customer$($Id$,$Name$)$;

users.add$($customer$)$;

return$$users;

$\}$

$//$ adds a new user to the array list

public$$static$$ArrayList$$addUser$($int$$Id$,$String$$Name$)\{$

Users$$user$=$new$$Customer$($Id$,$Name$)$;

users.add$($user$)$;

return$$users;

$\}$

$//$ the user logging out method

public$$static$$void$$logOut$($String$$Name$)\{$

System.out.printf$("\%$s Logged out",$$Name$)$;

$\}$

$\}$

convert it to gui code