Serial Demo : Serialization « File Input Output « Java

Serial Demo


Database Programming with JDBC and Java, Second Edition
By George Reese
ISBN: 1-56592-616-1

Publisher: O'Reilly



 * Example 6-2.
public class SerialDemo implements Serializable {
  static public void main(String[] args) {
    try {
      { // Save a SerialDemo object with a value of 5.
        FileOutputStream f = new FileOutputStream("/tmp/testing");
        ObjectOutputStream s = new ObjectOutputStream(f);
        SerialDemo d = new SerialDemo(5);

      { // Now restore it and look at the value.
        FileInputStream f = new FileInputStream("/tmp/testing");
        ObjectInputStream s = new ObjectInputStream(f);
        SerialDemo d = (SerialDemo) s.readObject();

        System.out.println("SerialDemo.getVal() is: " + d.getVal());
    } catch (Exception e) {

  int test_val = 7; // value defaults to 7

  public SerialDemo() {

  public SerialDemo(int x) {
    test_val = x;

  public int getVal() {
    return test_val;


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