Sort folders according to their title

import java.util.ArrayList;

import java.util.Collections;

import java.util.HashSet;

import java.util.LinkedList;

import java.util.List;

import java.util.Locale;

import java.util.Set;

import java.util.TreeSet;

import android.annotation.SuppressLint;

import android.app.ActionBar;

        public void newFolders(final List<FolderInfoHolder> newFolders) {

            runOnUiThread(new Runnable() {

                public void run() {

		    Set<String> folderNamesSet = new HashSet<>();

		    Set<String> folderNamesSet = new TreeSet<>();

                    ArrayList<FolderInfoHolder> folders = new ArrayList<>();

                    for (FolderInfoHolder folder : newFolders) {