How to use

listFiles

method

in

leap.lang.io.FileChangeObserver

/**
 * Create a new file entry for the specified file.
 *
 * @param parent The parent file entry
 * @param file The file to create an entry for
 * @return A new file entry
 */
private FileInfo createFileEntry(FileInfo parent, File file) {
  FileInfo entry = parent.newChildInstance(file);
  entry.refresh(file);
  File[] files = listFiles(file);
  FileInfo[] children = files.length > 0 ? new FileInfo[files.length] : FileInfo.EMPTY_FILE_INFOS;
  for (int i = 0; i < files.length; i++) {
    children[i] = createFileEntry(entry, files[i]);
  }
  entry.setChildren(children);
  return entry;
}

/**
 * Initialize the observer.
 *
 * @throws Exception if an error occurs
 */
protected synchronized void initialize() {
  rootEntry.refresh(rootEntry.getFile());
  File[] files = listFiles(rootEntry.getFile());
  FileInfo[] children = files.length > 0 ? new FileInfo[files.length] : FileInfo.EMPTY_FILE_INFOS;
  for (int i = 0; i < files.length; i++) {
    children[i] = createFileEntry(rootEntry, files[i]);
  }
  rootEntry.setChildren(children);
  _initialized = true;
}

  checkAndNotify(rootEntry, rootEntry.getChildren(), listFiles(rootFile));
} else if (rootEntry.isExists()) {
  checkAndNotify(rootEntry, rootEntry.getChildren(), Files.EMPTY_FILE_ARRAY);

checkAndNotify(entry, entry.getChildren(), listFiles(files[c]));
current[c] = entry;
c++;