一文搞懂Java克隆及深拷贝与浅拷贝的区别

　　import java.io.*;

　　class Address implements Serializable {

　　private String city;

　　private String street;

　　public Address(String city, String street) {

　　this.city = city;

　　this.street = street;

　　}

　　public void setCity(String city) {

　　this.city = city;

　　}

　　public void setStreet(String street) {

　　this.street = street;

　　}

　　public String getCity() {

　　return city;

　　}

　　public String getStreet() {

　　return street;

　　}

　　}

　　class Person implements Serializable {

　　private String name;

　　private int age;

　　private Address address;

　　public Person(String name, int age, Address address) {

　　this.name = name;

　　this.age = age;

　　this.address = address;

　　}

　　public void setName(String name) {

　　this.name = name;

　　}

　　public void setAge(int age) {

　　this.age = age;

　　}

　　public void setAddress(Address address) {

　　this.address = address;

　　}

　　public String getName() {

　　return name;

　　}

　　public int getAge() {

　　return age;

　　}

　　public Address getAddress() {

　　return address;

　　}

　　}

　　public class Main {

　　public static void main(String[] args) {

　　Address address = new Address("City", "Street");

　　Person person1 = new Person("Alice", 25, address);

　　// 深拷贝

　　Person person2 = deepCopy(person1);

　　System.out.println(person1.getName() + " " + person1.getAge() + " " + person1.getAddress().getCity()); // Alice 25 City

　　System.out.println(person2.getName() + " " + person2.getAge() + " " + person2.getAddress().getCity()); // Alice 25 City

　　person2.setName("Bob");

　　person2.setAge(30);

　　person2.getAddress().setCity("New City");

　　System.out.println(person1.getName() + " " + person1.getAge() + " " + person1.getAddress().getCity()); // Alice 25 City

　　System.out.println(person2.getName() + " " + person2.getAge() + " " + person2.getAddress().getCity()); // Bob 30 New City

　　}

　　public static T deepCopy(T object) {

　　try {

　　ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();

　　ObjectOutputStream objectOutputStream = new ObjectOutputStream(byteArrayOutputStream);

　　objectOutputStream.writeObject(object);

　　objectOutputStream.flush();

　　ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());

　　ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);

　　return (T) objectInputStream.readObject();

　　} catch (IOException | ClassNotFoundException e) {

　　e.printStackTrace();

　　return null;

　　}

　　}

　　}