Io-浅拷贝和深拷贝

package com.io;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;public class CopyObject {public static void main(String[] args) throws IOException,ClassNotFoundException,CloneNotSupportedException{Student stu=new Student(1,"admin","admin");//light copyStudent lightCopy=(Student) stu.clone();//deep copy/*将对象写入到内存流中*/ByteArrayOutputStream bos=new ByteArrayOutputStream();ObjectOutputStream oos=new ObjectOutputStream(bos);oos.writeObject(stu);/*从内存中将对象通过流的方式读出来*/ByteArrayInputStream bis=new ByteArrayInputStream(bos.toByteArray());ObjectInputStream ois=new ObjectInputStream(bis);Object deepCopy=ois.readObject();System.out.println("deepCopy:"+deepCopy);System.out.println("lightCopy"+lightCopy);}}class Student implements Serializable,Cloneable{private static final long serialVersionUID = 1L;private Integer id;private String userName;private String password;      public Student(Integer id, String userName, String password) {super();this.id = id;this.userName = userName;this.password = password;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getUserName() {return userName;}public void setUserName(String userName) {this.userName = userName;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public Object clone() throws CloneNotSupportedException{return super.clone();}      @Override    public String toString() {    // TODO Auto-generated method stub    return "Student[id:"+id+", userName:"+userName+", password:"+password+"]";    }   }