Twitter4J Friends

Test.java

private ArrayList<Long> getAllFriendsIDs(String user) throws TwitterException{
        ArrayList<Long> tmp = new ArrayList<>();
        ArrayList<Long> friends = new ArrayList<>();
        Long cursor = -1L;
        IDs ids = null;

        checkAPICall("/users/show/:id");
        User curUser = _tw.showUser(user);
        // Take the min number of user
        if(curUser.getFollowersCount() < curUser.getFriendsCount()){
            do {
                checkAPICall("/followers/ids");
                ids = _tw.getFollowersIDs(user, cursor, maxUserPerPage);
                for(Long id : ids.getIDs()){
                    tmp.add(id);
                }
                cursor = ids.getNextCursor();
            } while(ids.hasNext());
        }
        else{
            do {
                checkAPICall("/friends/ids");
                ids = _tw.getFriendsIDs(user, cursor, maxUserPerPage);
                for(Long id : ids.getIDs()){
                    tmp.add(id);
                }
                cursor = ids.getNextCursor();
            } while(ids.hasNext());
        }   // Finish this I have a list of follower or friends
            // I have to check if they are also on the other list
        for(Long id : tmp){
            checkAPICall("/friendships/show");
            Relationship rel = _tw.showFriendship(curUser.getId(),id);
            if(rel.isSourceFollowedByTarget() && rel.isSourceFollowingTarget()){
                friends.add(id);
            }
        }
        return friends;
    }