| FileTreeVisitor | An instance of this interface must be passed to FileTree.walkFileTree method in order to execute some logic while iterating over the directory descendants. |
| FileUtils.CreateDirectoryException | Represents an exception during directory creation |
| FileUtils.FileDeleteException | Represents an exception when the target file/directory cannot be deleted |
| FileUtils.ParentDirNotFoundException | A specialization of FileNotFoundException when the parent-dir doesn't exist |
| FileUtils.RenameException | Represents an unknown rename exception |