Read double from a File in Java

//from   www . jav a 2  s  .  co  m
import java.io.DataInputStream;
import java.io.FileInputStream;

public class Main {

  public static void main(String[] args) throws Exception{
      FileInputStream fin = new FileInputStream("myFile.dat");
      DataInputStream din = new DataInputStream(fin);
      while (true) {
        double theNumber = din.readDouble();
        System.out.println(theNumber);
      }

  }
}