使类可克隆

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;
/*
来 自*
 nowjava
*/

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.io.Serializable;


public class Main {


  public static void main(String[] args) {

    Team team1 = new Team();

    Team team2 = new Team();


    team1.setCity("Boston");

    team1.setName("Flag");


    team2.setCity("Chicago");

    team2.setName("Fire");


    Team team3 = team1;
    /** from 
    nowjava**/

    Team team4 = team2.clone();


    Team team5 = team1.shallowCopyClone();


    System.out.println("Team 3:");

    System.out.println(team3.getCity());

    System.out.println(team3.getName());


    System.out.println("Team 4:");

    System.out.println(team4.getCity());

    System.out.println(team4.getName());


    // Teams move to different cities

    team1.setCity("St. Louis");

    team2.setCity("Orlando");


    System.out.println("Team 3:");

    System.out.println(team3.getCity());

    System.out.println(team3.getName());


    System.out.println("Team 4:");

    System.out.println(team4.getCity());

    System.out.println(team4.getName());


    System.out.println("Team 5:");

    System.out.println(team5.getCity());

    System.out.println(team5.getName());


    if (team1 == team3) {

      System.out.println("team1 and team3 are equal");

    } else {

      System.out.println("team1 and team3 are NOT equal");

    }


    if (team1 == team5) {

      System.out.println("team1 and team5 are equal");

    } else {

      System.out.println("team1 and team5 are NOT equal");

    }


  }


}


class Team implements Cloneable, Serializable {


  private String name;

  private String city;


  /**

   * @return the name

   */

  public String getName() {

    return name;

  }


  /**

   * @param name

   *          the name to set

   */

  public void setName(String name) {

    this.name = name;

  }


  /**

   * @return the city

   */

  public String getCity() {

    return city;

  }


  /**

   * @param city

   *          the city to set

   */

  public void setCity(String city) {

    this.city = city;

  }


  public String getFullName() {

    return this.name + " - " + this.city;

  }


  /**

   * Overrides Object's clone method to create a deep copy

   * 

   * @return

   */

  @Override

  public Team clone() {


    Team obj = null;

    try {

      ByteArrayOutputStream baos = new ByteArrayOutputStream();

      ObjectOutputStream oos = new ObjectOutputStream(baos);

      oos.writeObject(this);

      oos.close();


      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

      ObjectInputStream ois = new ObjectInputStream(bais);

      obj = (Team) ois.readObject();

      ois.close();

    } catch (IOException e) {

      e.printStackTrace();

    } catch (ClassNotFoundException cnfe) {

      cnfe.printStackTrace();

    }

    return obj;

  }


  /**

   * Overrides Object's clone method to create a shallow copy

   * 

   * @return

   */

  public Team shallowCopyC