Need for Data Input Stream

What is the difference between

FileInputStream fstream = new FileInputStream ("file1.txt");
BufferedReader br = new BufferedReader(new InputStreamReader(fstream));

and

FileInputStream fstream = new FileInputStream ("file1.txt");
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(new InputStreamReader(in));

Do we really need a DataInputStream here?