Create DataInputStream out of BufferedInputStream : BufferedOutputStream « File « Java Tutorial

1. Java Tutorial
2. File
3. BufferedOutputStream

import java.io.BufferedInputStream;
import java.io.DataInputStream;
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.IOException;

public class PrimeReader {
  public static void main(String[] arguments) {
    try {
      FileInputStream file = new FileInputStream("400primes.dat");
      BufferedInputStream buff = new BufferedInputStream(file);
      DataInputStream data = new DataInputStream(buff);

      try {
        while (true) {
          int in = data.readInt();
          System.out.print(in + " ");
        }
      } catch (EOFException eof) {
        buff.close();
      }
    } catch (IOException e) {
      System.out.println("Error - " + e.toString());
    }
  }
}