Make FIle List

FileManager.java

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.List;

public class FileManager {
	public static List<File> getParseFileList(String path){
		List<File> fileList = new ArrayList<File>();
		
		File dir = new File(path);
		fileList = makeFilelist(dir);
		
		File[] copyList = fileList.toArray(new File[0]);
		Arrays.sort(copyList, new FileSort());
		
		fileList = Arrays.asList(copyList);
		return fileList;
	}
	
	private static List<File> makeFilelist(File  root){
		List<File> list = new ArrayList<File>();
		
		for(File file : root.listFiles()){
			if(file.isDirectory()){
				list.addAll(makeFilelist(file));
			}else{
				if(file.getName().indexOf(".csv") > 0){
					list.add(file);
				}
			}
		}
		return list;
	}
	
	private static class FileSort implements Comparator<File>{
		public int compare(File src, File target){
			int diff = src.getName().compareTo(target.getName());
			return diff;
		}
	}
}