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dz¿½±´£º°ÑÒ»¸ö¶ÔÏóÖÐËùÓеķÇstatic³ÉÔ±±äÁ¿(°üÀ¨¶ÔÆäËü¶ÔÏóµÄÒýÓã¬javaÖеÄÒýÓÃÏ൱ÓÚC/C++ÖеÄÖ¸Õë±äÁ¿)¶¼¿½±´Ò»±é£¬¶ø²»¿½±´ÒýÓÃËùÖ¸ÏòµÄ¶ÔÏó
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   1.±ØÐëʵÏÖCloneable½Ó¿Ú(Õâ¸ö½Ó¿ÚÖÐûÓж¨Òå·½·¨£¬½Ð×ö±ê¼Ç½Ó¿Ú)
   2.ÖØдObjectÀàµÄclone()·½·¨£¬¸Ã·½·¨ÊµÏÖµÄÊÇdz¿½±´
   3.ÔÚ¸ÃÀàµÄclone()·½·¨ÖеĵÚÒ»¾ä£¬±ÈÈçµ÷ÓÃsuper.clone()À´µ÷ÓÃObjectµÄclone()·½·¨À´ÊµÏÖ¿½±´
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package com.test;
public class CloneTest
{
public static void main(String[] args)
{
Student s1 = new Student();
s1.setAge(20);
s1.setName("wudi");
School school = new School();
school.setName("Peiyang University");
school.setBornYear(1895);
s1.setSchool(school);
System.out
.println("s1:" + s1.getName() + " " + s1.getAge() + " "
+ s1.getSchool().getName() + " "
+ s1.getSchool().getBornYear());

try
{
//¿½±´Ò»¸öѧÉú
Student s2 = (Student)s1.clone();
s2.setAge(21);
s2.setName("WUDI");
System.out
.println("s2:" + s2.getName() + " " + s2.getAge() + " "
+ s2.getSchool().getName() + " "
+ s2.getSchool().getBornYear());

System.out.println("after s2 changing some property:");
//ͨ¹ýѧÉús2¸Ä±äÁËËûËùÔÚѧУµÄÃû³ÆºÍ³ÉÁ¢Ê±¼ä
s2.getSchool().setName("Tianjin University");
s2.getSchool().setBornYear(1951);


System.out
.println("s1:" + s1.getName() + " " + s1.getAge() + " "
+ s1.getSchool().getName() + " "
+ s1.getSchool().getBornYear());
System.out
.println("s2:" + s2.getName() + " " + s2.getAge() + " "


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