package cn.itcast_04;public class Student4 implements Cloneable {private String name;private int age;public Student4() {super();}public Student4(String name, int age) {　　　　　//调用是Object构造方法　　　　super();this.name = name;this.age = age;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}//重写clone()方法重写
    @Overrideprotected Object clone() throws CloneNotSupportedException {return super.clone();}
}

package cn.itcast_04;
/* *protected void finalize();当垃圾回收器确定不存在对象有更多引用时候,垃圾回收器调用此方法*但是什么时候调用该方法不知道**proected Object clone();创建并且返回该对象的副本*    A:重写该方法;**    Cloneabel;此类实现了Cloneable 接口,以指示Object.clone()方法对对象复制换句话说,只有实现该接口,才能复制对象Cloneable 是标志接口,里面没有方法,只有继承该方法才能克隆对象*/public class StudentDemo4
{public static void main(String[] args) throws CloneNotSupportedException{//创建学生对象Student4 s = new Student4();s.setName("liqingxiang");s.setAge(24);Object obj = s.clone();Student4 s2 = (Student4)obj;System.out.println("name:" + s.getName() + ",  age:" +s.getAge());System.out.println("name:" + s2.getName() + ",  age:" +s2.getAge());System.out.println("==============");//s对象改变,但是s2对象属性没变,因此他们是两个不同的对象s.setAge(29);s.setName("xiaoming");System.out.println("name:" + s2.getName() + ",  age:" +s2.getAge());}
}