浅拷贝
被复制的对象的所有的变量都与原对象有相同的值，而所有的引用对象仍然指向原来的对象。换言之，浅拷贝 不复制引用对象。
1 class Experience {
2 private String skill;
3 public void setSkill(String skill){
4 this.skill = skill;
5 }
6 public void setExperience(String skill){
7 this.skill = skill;
8 }
9
10 @Override
11 public String toString() {
12 return skill;
13 }
14 }
15
16 public class CloneTest implements Cloneable{
17
18 private int age ;
19 private Experience experience;
20
21 public CloneTest(){
22 this.age = 10;
23 this.experience = new Experience();
24 }
25 public Experience getExperience() {
26 return experience;
27 }
28 public void setExperience(String skill){
29 experience.setExperience(skill);
30 }
31 public void show(){
32 System.out.println(experience.toString());
33 }
34 public int getAge() {
35 return age;
36 }
37 @Override
38 protected Object clone() throws CloneNotSupportedException {
39 return (CloneTest) super.clone();
40 }
41 }
42 //测试类
43 class MianTest{
44
45 public static void main(String[] args) throws CloneNotSupportedException {
46 CloneTest test = new CloneTest();
47 test.setExperience("我是小明，我精通Java，C++的复制粘贴");
48 test.show();
49 CloneTest cloneTest = (CloneTest) test.clone();
50 cloneTest.show();
51 cloneTest.setExperience("我是小明的副本，我精通Java,C++");
52 cloneTest.show();
53 test.show();
54 System.out.println(cloneTest.getAge());
55 }
56 }
输出的结果：
我是小明，我精通Java，C++的复制粘贴
我是小明，我精通Java，C++的复制粘贴
我是小明的副本，我精通Java,C++
我是小明的副本，我精通Java,C++
10
从结果中不难看出，拷贝的副本改变了Experience的skill属性，原类中的skill属性打印出来也是修改后的结果，说明引用 类型的拷贝没有将对象拷贝，引用的指向还是原类中的指向
深拷贝
除了被复制的对象的所有变量都有原来对象的值之外，还把引用对象也指向了被复制的新对象
1 class Experience implements Cloneable{
2 private String skill;
3 public void setSkill(String skill){
4 this.skill = skill;
5 }
6 public void setExperience(String skill){
7 this.skill = skill;
8 }
9
10 @Override
11 public String toString() {
12 return skill;
13 }
14
15 @Override
16 protected Object clone() throws CloneNotSupportedException {
17 return super.clone();
18 }
19 }
20
21 public class CloneTest implements Cloneable{
22
23 private int age ;
24 private Experience experience;
25
26 public CloneTest(){
27 this.age = 10;
28 this.experience = new Experience();
29 }
30 public Experience getExperience() {
31 return experience;
32 }
33 public void setExperience(String skill){
34 experience.setExperience(skill);
35 }
36 public void show(){
37 System.out.println(experience.toString());
38 }
39 public int getAge() {
40 return age;
41 }
42 @Override
43 protected Object clone() throws CloneNotSupportedException {
44 CloneTest o = (CloneTest) super.clone();
45 o.experience = (Experience) o.getExperience().clone();
46 return o;
47 }
48 }
49 class MianTest{
50
51 public static void main(String[] args) throws CloneNotSupportedException {
52 CloneTest test = new CloneTest();
53 test.setExperience("我是小明，我精通Java，C++的复制粘贴");
54 test.show();
55 CloneTest cloneTest = (CloneTest) test.clone();
56 cloneTest.show();
57 cloneTest.setExperience("我是小明的副本，我精通Java,C++");
58 cloneTest.show();
59 test.show();
60 System.out.println(cloneTest.getAge());
61 }
62 }
输出的结果：
我是小明，我精通Java，C++的复制粘贴
我是小明，我精通Java，C++的复制粘贴
我是小明的副本，我精通Java,C++
我是小明，我精通Java，C++的复制粘贴
10
可以看出和第一次的结果不同了。
o.experience =(Experience) o.getExperience().clone();
加了这句之后效果不同的。说明实现了深拷贝，原引用对象也复制过来了
