package io;

import java.io.*;

import java.util.zip.*;

import java.util.*;

/**

* RUN:

* javac io/Worm.java && java io.Worm

*

* OUTPUT:

* Construcot Worm: 6

* Construcot Worm: 5

* Construcot Worm: 4

* Construcot Worm: 3

* Construcot Worm: 2

* Construcot Worm: 1

* w = :a(853):b(119):c(802):d(788):e(199):f(881)

* Worm storage

* w2 = :a(853):b(119):c(802):d(788):e(199):f(881)

* Memory of object Worm

* w3 = :a(853):b(119):c(802):d(788):e(199):f(881)

*/

public class Worm implements Serializable {

private static Random rand = new Random(47);

private Data[] d = {

new Data(rand.nextInt(10)),

new Data(rand.nextInt(10)),

new Data(rand.nextInt(10))

};

private Worm next;

private char c;

public Worm(int i, char x) {

System.out.println("Construcot Worm: " + i);

c = x;

if (--i > 0) {

next = new Worm(i, (char)(x+1));

}

}

public Worm() {

System.out.println("Default constructor");

}

public String toString() {

StringBuilder result = new StringBuilder(":");

result.append(c);

result.append("(");

for (Data dat : d) {

result.append(dat);

}

result.append(")");

if (next != null) {

result.append(next);

}

return result.toString();

}

public static void main(String[] args) throws ClassNotFoundException, IOException {

Worm w = new Worm(6, 'a');

System.out.println("w = " + w);

ObjectOutputStream out = new ObjectOutputStream(

new FileOutputStream("worm.out")

);

out.writeObject("Worm storage\n");

out.writeObject(w);

out.close();

ObjectInputStream in = new ObjectInputStream(

new FileInputStream("worm.out")

);

String s = (String)in.readObject();

Worm w2 = (Worm)in.readObject();

System.out.println(s + "w2 = " + w2);

ByteArrayOutputStream bout = new ByteArrayOutputStream();

ObjectOutputStream out2 = new ObjectOutputStream(bout);

out2.writeObject("Memory of object Worm\n");

out2.writeObject(w);

out2.flush();

ObjectInputStream in2 = new ObjectInputStream(

new ByteArrayInputStream(bout.toByteArray())

);

s = (String)in2.readObject();

Worm w3 = (Worm)in2.readObject();

System.out.println(s +"w3 = "+w3);

}

}

class Data implements Serializable {

private int n;

public Data(int n) { this.n = n; }

public String toString() { return Integer.toString(n); }

}