What would be Java equivalent for php array like this:
$user = array("name" => "John", "email" => "john@mail.com");
You can use a HashMap or a Hashtable. Not sure which one to use? Read the API or check out this question which discusses the pros and cons of each.
HashMap<String, String> map = new HashMap<String, String>();
map.put("name", "John");
map.put("email", "john@mail.com");