Mega Code Archive
Writing to a Binary File
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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;
}
}
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