package lab3;

import java.io.*;

public class lab3 implements Serializable{

  B m_b;
  C m_c;

  public lab3()
    {
        D d = new D();
        m_b = new B(d);
        m_c = new C(d);
    }

  public static void main(String[] args)
    {

    try
      {
        lab3 a = new lab3();
        FileOutputStream fos;
        ObjectOutputStream oos;
        fos = new FileOutputStream("t.tmp");
        oos = new ObjectOutputStream(fos);
        oos.writeObject(a);
        oos.flush();
        fos.close();
        FileInputStream fis;
        ObjectInputStream ois;
        fis = new FileInputStream("t.tmp");
        ois = new ObjectInputStream(fis);
        lab3 a1 = (lab3) ois.readObject();
        fis.close();

        System.out.println("A:" + a1);
        System.out.println("B:" + a1.m_b);
        System.out.println("C:" + a1.m_c);
        System.out.println("D[B]:" + a1.m_b.m_d);
        System.out.println("D[C]:" + a1.m_c.m_d);

        } catch (IOException e)
          { System.out.println(e);}
          catch (ClassNotFoundException e)
          { System.out.println(e);}
        for( ; ; );
        }



        class B implements Serializable
          {   D m_d;

            B(D d)
              {
              m_d = d;
              }
          }

        class C
        implements Serializable
        {   D m_d;

            C(D d)
              {
              m_d = d;
              }
          }

        class D
        implements Serializable
          {
       /* int d = 30;  */
          }


        }