实验八

package 实验八;

public interface Volume { //定义接口
    public abstract double getVolume();
}

package 实验八;

public interface Area {
    public abstract double area();
}

package 实验八;
import java.util.Scanner;
public class Yuanzhui implements Area,Volume {
    private double radius;
    private double length;
    private double height;
    public Yuanzhui(double radius,double length,double height)
    {
        this.radius = radius;
        this.length = length;
        this.height = height;
    }
    public Yuanzhui()
    {
        this(0,0,0);
    }
    public double area() //计算圆锥的表面积，实现Area接口中的抽象方法
    {
        return Math.PI*this.radius*this.length+Math.PI*this.radius* this.radius ;
    }
    public double volume() //计算圆锥的体积，实现Volume接口中的抽象方法
    {
        return Math.PI * this.radius * this.radius * this.height/3;
    }
    public String toString()
    {
        return "一个圆锥，半径"+this.radius+"，高"+this.height+"，斜边,"+this.length+"表面积为"+this.area()+"，体积为"+this.volume();
    }
    public static void main(String args[])
    {
        @SuppressWarnings("resource")
        Scanner shuru=new Scanner(System.in);
        int r,h,l;
        System.out.println("请输入圆锥体的底面半径r");//
        r=shuru.nextInt();
        System.out.println("请输入圆锥体的斜边长l");//
        l=shuru.nextInt();
        System.out.println("请输入圆锥体的高h");//
        h=shuru.nextInt();
        Yuanzhui y=new Yuanzhui(r,l,h);
        System.out.println(y.toString());
        System.out.println("请输入圆锥体的底面半径r");//
        r=shuru.nextInt();
        System.out.println("请输入圆锥体的斜边长l");//
        l=shuru.nextInt();
        System.out.println("请输入圆锥体的高h");//
        h=shuru.nextInt();
        Yuanzhui m=new Yuanzhui(r,l,h);
        System.out.println(m.toString());
        if(y.volume()>m.volume())
        {
            System.out.println("体积为"+y.volume()+"的圆锥体体积大");
        }
        else 
        {
            System.out.println("体积为"+m.volume()+"的圆锥体体积大");
        }
    }
    @Override
    public double getVolume() {// TODO Auto-generated method stub
        return 0;
        }

}

 

 

通过本次实验理解了作用，接口和实现接口的类的关系，掌握了声明接口、一个类实现多个接口的声明和使用方法。