Complete beginner here. I am trying to call a method from a class to run in the main class. But I cannot seem to figure out why it is not work. Here is how I am calling the class

```
public static void main(String[] args) {
      findMP3Tracks FT = new findMP3Tracks();
      FT.findMP3();

```

This is the class method i want to call

```
public static List<String> findMP3(String p)
{
    List<String> foundMP3Tracks = new ArrayList<>();

    try (DirectoryStream<Path> folderContents = Files.newDirectoryStream(Paths.get(p))) 
    { 
        //Look for 
        for (Path folderItem: folderContents){ 
 if(Files.isDirectory(folderItem, LinkOption.NOFOLLOW_LINKS)) {
                foundMP3Tracks.addAll(findMP3(folderItem.toString()));
            }
            else if(isValidMP3(folderItem.toString())) {
                foundMP3Tracks.add(folderItem.toString());
            }
        }
    } 

```