package 实验包;
public class interface_test {
public static void main (String[] arges){
yuanzhui a=new yuanzhui(2,5,6);
yuanzhui b=new yuanzhui(1,3,3);
System.out.println(a.Area());
System.out.println(b.Area());
System.out.println(a.volume());
System.out.println(b.volume());
System.out.println("体积较大的是："+Math.max(a.volume(), b.volume()));
}
}
class yuanzhui implements Volume,Area{
protected double r;
protected double l;
protected double h;
public yuanzhui(double r,double l,double h){
this.r=r;
this.l=l;
this.h=h;
}
public double volume(){
return Math.PI*Math.pow(r,2)*h/3;
}
public double Area(){
return Math.PI*this.r*this.r+this.r*this.l;
} }
interface Volume{
public double volume();
}
interface Area{
public double Area();
}