Writing to a Binary File

import java.io.BufferedOutputStream;import java.io.DataOutputStream;import java.io.File;import java.io.FileOutputStream;public class WriteBinaryFile {  public static void main(String[] args) throws Exception {    Product[] movies = new Product[10];    movies[0] = new Product("W", 1946, 14.95);    movies[1] = new Product("T", 1965, 12.95);    movies[2] = new Product("Y", 1974, 16.95);    movies[3] = new Product("R", 1975, 11.95);    movies[4] = new Product("S", 1977, 17.95);    movies[5] = new Product("P", 1987, 16.95);    movies[6] = new Product("G", 1989, 14.95);    movies[7] = new Product("A", 1995, 19.95);    movies[8] = new Product("Game", 1997, 14.95);    movies[9] = new Product("F", 2001, 19.95);    DataOutputStream out = openOutputStream("movies.dat");    for (Product m : movies)      writeMovie(m, out);    out.close();  }  private static DataOutputStream openOutputStream(String name) throws Exception {    DataOutputStream out = null;    File file = new File(name);    out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(file)));    return out;  }  private static void writeMovie(Product m, DataOutputStream out) throws Exception {    out.writeUTF(m.title);    out.writeInt(m.year);    out.writeDouble(m.price);  }}class Product {  public String title;  public int year;  public double price;  public Product(String title, int year, double price) {    this.title = title;    this.year = year;    this.price = price;  }}