Serializar objeto a cadena en Java

package delftstack;

import java.io.*;
import java.util.*;

public class Serialize_Object {
  public static void main(String[] args) throws IOException, ClassNotFoundException {
    String Serialized_String = To_String(new Demo_Serialize());
    System.out.println(" The Serialized String ");
    System.out.println(Serialized_String);
    Demo_Serialize Original_object = (Demo_Serialize) From_String(Serialized_String);
    System.out.println("\n\nThe Original String");
    System.out.println(Original_object);
  }

  private static Object From_String(String s) throws IOException, ClassNotFoundException {
    byte[] Byte_Data = Base64.getDecoder().decode(s);
    ObjectInputStream Object_Input_Stream =
        new ObjectInputStream(new ByteArrayInputStream(Byte_Data));
    Object Demo_Object = Object_Input_Stream.readObject();
    Object_Input_Stream.close();
    return Demo_Object;
  }

  private static String To_String(Serializable Demo_Object) throws IOException {
    ByteArrayOutputStream Byte_Array_Output_Stream = new ByteArrayOutputStream();
    ObjectOutputStream Object_Output_Stream = new ObjectOutputStream(Byte_Array_Output_Stream);
    Object_Output_Stream.writeObject(Demo_Object);
    Object_Output_Stream.close();
    return Base64.getEncoder().encodeToString(Byte_Array_Output_Stream.toByteArray());
  }
}

class Demo_Serialize implements Serializable {
  private final static long serialVersionUID = 1;

  int i = Integer.MAX_VALUE;
  String s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
  Double d = new Double(-1.0);
  public String toString() {
    return "DelftStack is a resource for everyone interested in "
        + "programming, embedded software, and electronics. "
        + "It covers the programming languages like Python, "
        + "C/C++, C#, and so on in this website's first "
        + "development stage. Open-source hardware also falls "
        + "in the website's scope, like Arduino, Raspberry Pi, and BeagleBone.";
  }
}

 The Serialized String
rO0ABXNyABlkZWxmdHN0YWNrLkRlbW9fU2VyaWFsaXplAAAAAAAAAAECAANJAAFpTAABZHQAEkxqYXZhL2xhbmcvRG91YmxlO0wAAXN0ABJMamF2YS9sYW5nL1N0cmluZzt4cH////9zcgAQamF2YS5sYW5nLkRvdWJsZYCzwkopa/sEAgABRAAFdmFsdWV4cgAQamF2YS5sYW5nLk51bWJlcoaslR0LlOCLAgAAeHC/8AAAAAAAAHQAGkFCQ0RFRkdISUpLTE1OT1BRUlNUVVZXWFla


The Original String
DelftStack is a resource for everyone interested in programming, embedded software, and electronics. It covers the programming languages like Python, C/C++, C#, and so on in this website's first development stage. Open-source hardware also falls in the website's scope, like Arduino, Raspberry Pi, and BeagleBone.