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Create DataInputStream out of BufferedInputStream

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());     }   } }