Java - Object with custom Serializable method

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Description

Object with custom Serializable method

Demo

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;

class Main {//from ww  w .jav a2s .  co  m

  public static void main(String[] args) {
    class Employee implements Serializable {
      private static final long serialVersionUID = 1L;
      private Integer id;
      private String name;
      private String addedField;

      public Employee(Integer id, String name) {
        this.id = id;
        this.name = name;
      }

      @Override
      public String toString() {
        return "Employee [id=" + id + ", name=" + name + "]";
      }

      private void writeObject(ObjectOutputStream oos) {
        try {
          System.out.println("Internally Write Method Called");
          oos.writeInt(this.id);
          oos.writeObject(this.name);
        } catch (IOException e) {
          e.printStackTrace();
        }
      }

      private void readObject(ObjectInputStream ois) {
        try {
          System.out.println("Internally Read Method Called");
          id = ois.readInt();
          name = (String) ois.readObject();
        } catch (ClassNotFoundException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        } catch (IOException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }

    }

    Employee object1 = new Employee(1, "amy");
    Employee object2 = new Employee(2, "ankit");

    try {
      OutputStream fout = new FileOutputStream("ser.txt");
      ObjectOutput oout = new ObjectOutputStream(fout);
      System.out.println("Serialization process has started, serializing employee objects...");
      oout.writeObject(object1);
      oout.writeObject(object2);
      fout.close();
      oout.close();
      System.out.println("Object Serialization completed.");
      System.out.println("De-Serialization process has started, de-serializing employee objects...");

      InputStream inputStream = new FileInputStream("ser.txt");
      ObjectInput objectInput = new ObjectInputStream(inputStream);
      try {
        System.out.println((Employee) objectInput.readObject());
        System.out.println((Employee) objectInput.readObject());
      } catch (ClassNotFoundException e) {
        e.printStackTrace();
      }
      objectInput.close();
      inputStream.close();
    } catch (IOException ioe) {
      ioe.printStackTrace();
    }
  }

}

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