输入圆的半径 圆柱体的高h 求出圆的周长与面积 并利用该圆的半径求出圆柱体的体积

package Interface;
import javax.swing.JOptionPane;
public class Circle implements Area,Perimeter,Volume
{
    double r;
    double h;
    Circle()

{
        this(3,10);
    }
    Circle(double r,double h)

{
        this.h=h;
        this.r=r;
        
    }
    public static void main(String[] args)
    {
        String str1=JOptionPane.showInputDialog("请输入圆的半径：");
        double r=Double.parseDouble(str1);
        String str2=JOptionPane.showInputDialog("请输入圆柱体的高：");
        double h=Double.parseDouble(str2);
        Area Circle=new Circle(r,h);
        JOptionPane.showMessageDialog(null,"圆的半径："+r);
        JOptionPane.showMessageDialog(null,"圆的面积："+Circle.area());
        Volume Circle1=new Ciecle(r,h);
        JOptionPane.showMessageDialog(null,"圆柱体的体积："+Circle1.volume());
        Perimeter Circle2=new Ciecle(r,h);
        JOptionPane.showMessageDialog(null,"圆的周长："+Circle2.perimeter());
        
    }

    public double area(){
        return Math.PI*r*r;
    }
    public double perimeter(){
        return 2*Math.PI*r;
    }
    public double volume() {
    return this.area()*this.h;
    }
}
面积接口

package Interface;

public interface Area {
    public abstract double area();
}
周长接口

package Interface;

public interface Perimeter {
    public abstract double perimeter();
}
圆柱体的体积接口

package Interface;

public interface Volume
{
    public abstract double volume();
}