求解qqqqqqq秋秋秋秋秋秋秋

代码如下：

interface ShapeArea{
         public abstract double getArea();

         public abstract double getPerimeter();

 }

 class Circle implements ShapeArea{
  double radius;

 Circle(double r){
          radius=r;}

 public double getArea() {
          return 3.14*radius*radius;

 }

 public double getPerimeter()

 {
          return 2*3.14*radius;

 }

 public String toString() {
          return "radius="+radius+",perimeter="+getPerimeter()+",area="+getArea();

 }

          

 }

 public class Text{
          public static void main(String args[])

          {
                   Circle c=new Circle(1.0);

                   System.out.println(c.toString());

          }

 }