Java tutorial
import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.io.Serializable; public class Main { public static void main(String[] args) throws Exception { FileOutputStream fos = new FileOutputStream("books.dat"); ObjectOutputStream oos = new ObjectOutputStream(fos); Book book = new Book("1", "Java", "A"); oos.writeObject(book); oos.flush(); oos.close(); FileInputStream fis = new FileInputStream("books.dat"); ObjectInputStream ois = new ObjectInputStream(fis); book = (Book) ois.readObject(); System.out.println(book.toString()); ois.close(); } } class Book implements Serializable { private String isbn; private String title; private String author; public Book(String isbn, String title, String author) { this.isbn = isbn; this.title = title; this.author = author; } public String toString() { return "[Book: " + isbn + ", " + title + ", " + author + "]"; } }