import java.util.Scanner;
class Cylinder
{
double radius=0;
double height;
double PI=3.14;
void area()
{
System.out.println("圆柱的底面积是："+(PI * radius * radius));
}
double volume()
{
return (PI*radius*radius)*height;
}
}
public class App6_1 {
public static void main(String[] args)
{
Cylinder volu=new Cylinder();
Scanner reader=new Scanner(System.in);
System.out.print("请输入圆柱底圆半径：");
volu.radius=reader.nextDouble();
System.out.println();
System.out.print("请输入圆柱的高：");
volu.height=reader.nextDouble();
System.out.println("底圆半径："+volu.radius);
volu.area();
System.out.println("圆柱体积："+volu.volume());
}
}
运行结果：
