平面上有若干个圆，已知每个圆的半径和圆的位置，圆的位置用点类的对象表示。设计点类和圆类，并且圆类的对象可以克隆自身，克隆时可以浅克隆，也可以深克隆。

import java.io.*;

class Point{
int x,y;
public Point(int x,int y){
this.x=x;
this.y=y;
}
}

class Circle implements Cloneable{
private Point point;
int ridus;
public Circle(int x,int y,int r){
point = new Point(x,y);
ridus = r;
}
public Object clone() {
Circle circle = null;
try{
circle = (Circle)super.clone();
}catch(CloneNotSupportedException e){
e.printStackTrace();
}finally{
return circle;
}
}

public class Main{
public static void main(String []args){
try{
Circle circle =new Circle(4,5,6);
Circle circle1 = (Circle)circle.clone();
}catch(Exception e){
e.printStackTrace();
}
}
}