package 抽象类运用;

abstract class MyShape{

 String name;

 public  MyShape(String name) {

  this.name = name;

 }

 public abstract void getArea();

 public abstract void getlength();

}

class Circla extends MyShape{

 double r;

 public static final double pi = 3.14;

 public  Circla(String name,double r) {

  super(name);

  this.r=r;

 }

 public  void getArea() {

  System.out.println(name+"面积为:"+pi*r*r);

 }

 public void getlength() {

  System.out.println(name+"周长为:"+2*pi*r);

 }

}

class  Rect extends MyShape{

    int width;

    int higth;

    public Rect(String name,int width,int higth) {

     super(name);

     this.width = width;

     this.higth = higth;

    }

    public void  getArea() {

     System.out.println(name+"的面积为:"+width*higth);

    }

    public void getlength() {

     System.out.println(name+"的周长为:"+2*width+2*higth);

    }

}

public class Dome {

     public static void main(String [] args) {

      Circla c1 = new Circla("圆",4);

      System.out.println("图形的名字叫做:"+c1.name);

      c1.getArea();

      c1.getlength();

      Rect r1 = new Rect("矩形",2,3);

      System.out.println("图形的名字叫做:"+r1.name);

      r1.getArea();

      r1.getlength();

     }

}