Dúvidas a respeito de ler códigos de texto

package Game;
import java.io.*;

public class Altarya {
	 @SuppressWarnings("deprecation")
	public static void main(String[] args) {

		    File file = new File("C:\\araat.fbi"); //fbi é um formato de txt, funciona bem
		    FileInputStream fis = null;
		    BufferedInputStream bis = null;
		    DataInputStream dis = null;

		    try {
		      fis = new FileInputStream(file);

		      // Here BufferedInputStream is added for fast reading.
		      bis = new BufferedInputStream(fis);
		      dis = new DataInputStream(bis);

		      // dis.available() returns 0 if the file does not have more lines.
		      while (dis.available() != 0) {

		      // this statement reads the line from the file and print it to
		        // the console.
		        System.out.println(dis.readLine());
		      }

		      // dispose all the resources after using them.
		      fis.close();
		      bis.close();
		      dis.close();

		    } catch (FileNotFoundException e) {
		      e.printStackTrace();
		    } catch (IOException e) {
		      e.printStackTrace();
		    }
		  }
		}