对象拷贝-深拷贝

package com.yj.fenghao.clone;
//深拷贝的简单测试
import java.util.Date;

public class Employee implements Cloneable{
    
    private String name;
    private String age;
    private String salary;
    private String career;
    private Date date;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getAge() {
        return age;
    }
    public void setAge(String age) {
        this.age = age;
    }
    public String getSalary() {
        return salary;
    }
    public void setSalary(String salary) {
        this.salary = salary;
    }
    public String getCareer() {
        return career;
    }
    public void setCareer(String career) {
        this.career = career;
    }
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }
    public Employee(String name, String age, String salary, String career, Date date) {
        super();
        this.name = name;
        this.age = age;
        this.salary = salary;
        this.career = career;
        this.date = date;
    }
    public Employee() {
        super();
    }
//    /**
//     * 如果对象中含有其他的对象，调用超类的克隆方法是浅克隆
//     */
//    @Override
//    protected Object clone() throws CloneNotSupportedException {
//        return super.clone();
//    }
    
    /**
     * 如果对象中含有其他的对象，其他的对象也需要克隆，即使深拷贝
     */
    @Override
    protected Employee clone() throws CloneNotSupportedException {
        Employee emply = (Employee)super.clone();
        emply.date= (Date)date.clone();
        return emply;
    }
    @Override
    public String toString() {
        return "{"name":"+name+","age":"+age+","salary":"+salary+","career":"+career+","date":+"+date+"}";
    }
    

}

package com.yj.fenghao.clone;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;



public class CloneableTest {
    
    
    public static void main(String[] args) throws CloneNotSupportedException, ParseException {
        SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Employee em=new Employee();
        em.setDate(new Date());
        em.setName("fenghao");
        em.setAge("25");
        em.setSalary("1000");
        em.setCareer("111");
        Employee clone = em.clone();
        clone.setDate(format.parse("2015-01-01 12:00:00"));
        clone.setName("xuxiaoxiao");
        System.out.println(em.toString());
        System.out.println(clone.toString());
    }

}

运行结果：

{"name":fenghao,"age":25,"salary":1000,"career":111,"date":+Fri Apr 07 08:29:29 CST 2017}
{"name":xuxiaoxiao,"age":25,"salary":1000,"career":111,"date":+Thu Jan 01 12:00:00 CST 2015}