check folder for files java

1public void listFilesForFolder(final File folder) {
2    for (final File fileEntry : folder.listFiles()) {
3        if (fileEntry.isDirectory()) {
4            listFilesForFolder(fileEntry);
5        } else {
6            System.out.println(fileEntry.getName());
7        }
8    }
9}
10
11final File folder = new File("/home/you/Desktop");
12listFilesForFolder(folder);