Serialization with ObjectInputStream and ObjectOutputStream : Object Serialization « File « Java Tutorial






import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

class Employee implements java.io.Serializable {
  public String name;
  public String address;
  public transient int SSN;

  public int number;

  public void mailCheck() {
    System.out.println("Mailing a check to " + name + " " + address);
  }
}

class SerializeDemo {
  public static void main(String[] args) {
    Employee e = new Employee();
    e.name = "A";
    e.address = "B";
    e.SSN = 11111;
    e.number = 101;
    try {
      FileOutputStream fileOut = new FileOutputStream("employee.ser");
      ObjectOutputStream out = new ObjectOutputStream(fileOut);
      out.writeObject(e);
      out.close();
      fileOut.close();
    } catch (IOException i) {
      i.printStackTrace();
    }
  }
}

class DeserializeDemo {
  public static void main(String[] args) {
    Employee e = null;
    try {
      FileInputStream fileIn = new FileInputStream("employee.ser");
      ObjectInputStream in = new ObjectInputStream(fileIn);
      e = (Employee) in.readObject();
      in.close();
      fileIn.close();
    } catch (IOException i) {
      i.printStackTrace();
      return;
    } catch (ClassNotFoundException c) {
      System.out.println("Employee class not found");
      c.printStackTrace();
      return;
    }
    System.out.println("Name: " + e.name);
    System.out.println("Address: " + e.address);
    System.out.println("SSN: " + e.SSN);
    System.out.println("Number: " + e.number);
  }
}








11.38.Object Serialization
11.38.1.Conditions for Serialization
11.38.2.Storing Objects in a File
11.38.3.Reading an Object From a File
11.38.4.Serializing Variations on an Object
11.38.5.Writing objects sequentially to a file with class ObjectOutputStream
11.38.6.Read a file of objects sequentially and displays each record
11.38.7.Only parent class is Serializable
11.38.8.Saving and restoring the state of classes
11.38.9.Class combination Serialization
11.38.10.Controlling serialization by adding your own
11.38.11.Serialization with ObjectInputStream and ObjectOutputStream
11.38.12.Deal with transient in Object Serialization
11.38.13.Serialization Utilities