java获取文件列表,并按照文件名称排序

File[] files = file.listFiles();
if(files==null)return resultFileName;
List fileList = new ArrayList();
for (File f : files) {
    fileList.add(f);
}

Collections.sort(fileList, new Comparator() {
    @Override
    public int compare(File o1, File o2) {
        if (o1.isDirectory() && o2.isFile())
            return -1;
        if (o1.isFile() && o2.isDirectory())
            return 1;
        return o2.getName().compareTo(o1.getName());
    }
});

for (File f : fileList) {
    if(f.isDirectory()){
        resultFileName.add(f.getPath());
        ergodic(f,resultFileName);
    }else
        resultFileName.add(f.getPath());
}