| FileContents | PersistenceService. get(java.net.URL url) | 
| FileContents | ExtendedService. openFile(java.io.File file)Open a file on the client' system and return its contents. | 
| FileContents | FileOpenService. openFileDialog(java.lang.String pathHint,
              java.lang.String[] extensions) | 
| FileContents[] | ExtendedService. openFiles(java.io.File[] files)Opens multiple files on the user's sytem and returns their contents as a
  FileContents array | 
| FileContents[] | FileOpenService. openMultiFileDialog(java.lang.String pathHint,
                   java.lang.String[] extensions) | 
| FileContents | FileSaveService. saveAsFileDialog(java.lang.String pathHint,
                java.lang.String[] extensions,
                FileContents contents) | 
| FileContents | FileSaveService. saveFileDialog(java.lang.String pathHint,
              java.lang.String[] extensions,
              java.io.InputStream stream,
              java.lang.String name) |