changes the user 's username concode_field_sep String password concode_elem_sep User currentUser concode_elem_sep boolean loggedIn concode_elem_sep String username concode_field_sep void setPassword concode_elem_sep String getPassword concode_elem_sep User getCurrentUser concode_elem_sep boolean isLoggedIn concode_elem_sep String login concode_elem_sep String getUsername
void function ( String arg0 ) { this . username = arg0 ; }