public  abstract class File {
		// instance variable
	File parentDirectory;
     	FileName file_name;

        	// constructor
     	File(File oneFile, String name) {
		parentDirectory = oneFile;
		file_name = new FileName(name);
     	} 

		// method to get the parent directory
	public File getParentDir(){
		return parentDirectory;
	}

	public CompoundFile getDir() { 
		return null;
	}

	public Link getLink() {
		return null;
	}

	public FileName getFileName() {
		return file_name;
	}

	public void print(String s) {}
		
}// end of class File