android - how to find a user in a ParseUser object -

hi wondering why code not work. trying query parseuser's username field find user keeps saying cant find it.

private void findusername(string user) {         // query user database find passed in user         parsequery query = parseuser.getquery();         query.whereequalto("username", user);         query.findinbackground(new findcallback() {             @override             public void done(list<parseobject> objects, parseexception e) {                 founduser = (objects.size() != 0);             }         });     } 

here method calls it

if (!founduser) {     errormessage.settext("invalid user name"); } 

founduser field because couldnt return in method...

parse treats user objects separate parse objects. should use list<parseuser> instead of list<parseobject>. parse android guide provides example https://parse.com/docs/android_guide#users-querying. here parse example clause.

parsequery<parseuser> query = parseuser.getquery(); query.whereequalto("username", user); query.findinbackground(new findcallback<parseuser>() {   public void done(list<parseuser> objects, parseexception e) {     if (e == null) {         // query successful.     } else {         // went wrong.     }   } });