小明家住农村，家里有几块形状不同的地，请帮助小明计算下他家地的总面积和人均面积。系统包括家庭类，Shape接口，园类以及长方形类。其中园类和长方形类实现Shape接口。
Family类包含属性numPeople描述家庭人数，数组shapes描述小明家所拥有的几块土地，方法 getTotalArea()， getAvgArea()分别求出家庭总土地面积和人均土地面积。
属性numPepole 和shapes值在运行时通过键盘给出。
请完成下列代码

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in); 
        //输入土地数 input area number
        int areanum = input.nextInt();
        //输入家庭人数 peoplenum
        int peoplenum = input.nextInt();
 //创建土地数组 根据土地数 new Shape Array based on areanum
    Shape []shapes = 【】;
        for(int i=0;i<shapes.length;i++){
            String str = input.next();
            
            if(str.equals("cir")){ //判断是否是圆形土地
                double r = input.nextDouble(); //输入圆形土地的半径
                【】  //创建圆形土地对象，并放入shapes数组
            }
            else
                if(str.equals("rec")){
                    double height = input.nextDouble();
                    double width = input.nextDouble();
                     【】//创建长方形土地对象，并放入shapes数组
                }
            
        }//for 结束
        //创建家庭对象小明，将小明家的人数和土地传入
        Family xiaoming = new Family(peoplenum,shapes);
        //求小明家总土地面积
        double totalArea =【】;
        //求小明家人均土地面积
        double avgArea =【】;
        System.out.printf("total Area is:%.2f\n",totalArea);
        System.out.printf("average Area is:%.2f\n",avgArea);
    }

}

//定义接口Shape
【】 Shape {
  //定义方法double getArea();
     【】;
}

class Circle [ ]Shape {
    private double radius;

    @Override //重写方法getArea()
    []

    
    public Circle() {
        this(1);
    }

    public Circle(double radius) {
        setRadius(radius);
    }

    public double getRadius() {
        return radius;
    }

    public void setRadius(double radius) {
        this.radius = radius;
    }

}

class Rectangle[] Shape{
    private double height,width;
 
 //方法重写
 【】

public Rectangle(double height, double width) {
        super();
        this.height = height;
        this.width = width;
    }

    public Rectangle() {
        this.width = height =1;
    }

    public double getHeight() {
        return height;
    }

    public void setHeight(double height) {
        this.height = height;
    }

    public double getWidth() {
        return width;
    }

    public void setWidth(double width) {
        this.width = width;
    }
}
class Family{
    private int numPeople; //人口数
    
    private Shape[] shapes;//家庭拥有土地

    public Family(int numPeople, Shape[] shapes) {
        this.numPeople = numPeople;
        this.shapes = shapes;
    }
    
    public double getTotalArea(){
        double sum  =0;
        //求家庭土地总面积，将shapes数组中每一个土地求面积相加求和
    【】
        return sum;
    }
    //求家庭人均土地面积
public double getAvgArea(){
        【】
    }

    public int getNumPeople() {
        return numPeople;
    }

    public void setNumPeople(int numPeople) {
        this.numPeople = numPeople;
    }

    public Shape[] getShapes() {
        return shapes;
    }

    public void setShapes(Shape[] shapes) {
        this.shapes = shapes;
    }
    
}

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        //输入土地数 input area number
        int areanum = input.nextInt();
        //输入家庭人数 peoplenum
        int peoplenum = input.nextInt();
        //创建土地数组 根据土地数 new Shape Array based on areanum
        Shape []shapes = new Shape[areanum];
        for(int i=0;i<shapes.length;i++){
            String str = input.next();


            if(str.equals("cir")){ //判断是否是圆形土地
                double r = input.nextDouble(); //输入圆形土地的半径
                shapes[i]=new Circle(r);  //创建圆形土地对象，并放入shapes数组
            }
            else
            if(str.equals("rec")){
                double height = input.nextDouble();
                double width = input.nextDouble();
                shapes[i]=new Rectangle(height,width) ;//创建长方形土地对象，并放入shapes数组
            }

        }//for 结束
        //创建家庭对象小明，将小明家的人数和土地传入
        Family xiaoming = new Family(peoplenum,shapes);
        //求小明家总土地面积
        double totalArea = xiaoming.getTotalArea();
        //求小明家人均土地面积
        double avgArea = xiaoming.getAvgArea();
        System.out.printf("total Area is:%.2f\n",totalArea);
        System.out.printf("average Area is:%.2f\n",avgArea);
    }

}
//定义接口Shape
 interface Shape {
    //定义方法double getArea();
    double getArea();

}

class Circle implements Shape {
private double radius;

@Override //重写方法getArea()
    public double getArea()
{
    return radius*radius*Math.PI;
}




public Circle() {
        this(1);
        }

public Circle(double radius) {
        setRadius(radius);
        }

public double getRadius() {
        return radius;
        }

public void setRadius(double radius) {
        this.radius = radius;
        }


}


class Rectangle implements Shape{
private double height,width;

        //方法重写


    @Override
    public double getArea() {
        return (height*width);
    }

    public Rectangle(double height, double width) {
        super();
        this.height = height;
        this.width = width;
        }

public Rectangle() {
        this.width = height =1;
        }

public double getHeight() {
        return height;
        }

public void setHeight(double height) {
        this.height = height;
        }

public double getWidth() {
        return width;
        }

public void setWidth(double width) {
        this.width = width;
        }
        }
class Family{
    private int numPeople; //人口数

    private Shape[] shapes;//家庭拥有土地

    public Family(int numPeople, Shape[] shapes) {
        this.numPeople = numPeople;
        this.shapes = shapes;
    }

    public double getTotalArea(){
        double sum  =0;
        //求家庭土地总面积，将shapes数组中每一个土地求面积相加求和
    for(int i=0;i< shapes.length;i++)
    {
        sum=sum+shapes[i].getArea();
    }
        return sum;
    }
    //求家庭人均土地面积
    public double getAvgArea(){
        double renjun;
        renjun=getTotalArea()/getNumPeople();
        return renjun;
    }

    public int getNumPeople() {
        return numPeople;
    }

    public void setNumPeople(int numPeople) {
        this.numPeople = numPeople;
    }

    public Shape[] getShapes() {
        return shapes;
    }

    public void setShapes(Shape[] shapes) {
        this.shapes = shapes;
    }

}