Java Serialization

1. write an essay about what is Serialization, define some cases and select appropiate
    Serialization scenario to solve those case, explain why.
    Serialization adalah mekanisme mengubah keadaan suatu objek menjad
    aliran byte.
    1. Untuk menyimpan / mempertahankan status suatu objek
    2. Untuk melakukan perjalanan objek di jaringan.
2. write a simple code to show Serialization in action by implementing you cases above.

    import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
public class reliasasi implements java.io.Serializable
{
    public int a;
    public String b;

    // Default Constructor

    public reliasasi(int a, String b)
    {
        this.a = a;
        this.b = b;
    }
}


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

class test
    {
        public static void main(String[] args)
        {

            reliasasi k = new reliasasi(1, "Rahmad");
            String filenama = "file.ser";

            // Serialization
            try
            {
                // Saving of object in a file
                FileOutputStream file = new FileOutputStream(filenama);
                ObjectOutputStream out = new ObjectOutputStream(file);

                // Method for serialization of object
                out.writeObject(k);

                out.close();
                file.close();
                System.out.println("Object has been serialized");
            }

            catch(IOException ex)
            {
                System.out.println("IOException is caught");
            }

            reliasasi k1 = null;

            // Deserialzation
            try
            {
                // Reading the object from a file
                FileInputStream file = new FileInputStream(filenama);
                ObjectInputStream in = new ObjectInputStream(file);

                // Method for deserialization of object
                k1 = (reliasasi) in.readObject();

                in.close();
                file.close();

                System.out.println("Object has been deserialized");
                System.out.println("Result a = " + k1.a);
                System.out.println("Result b = " + k1.b);

            }

            catch (IOException ex)
            {
                System.out.println("IOException is caught");
            }

            catch (ClassNotFoundException ex)
            {
                System.out.println("ClassNotFoundException is caught");
            }
        }
    }