java程序设计基础_陈国君版第五版_第六章例题
class Cylinder
{
double radius;
int height;
double pi = 3.14;
void area(){
System.out.println("底面积 = "+pi*radius*radius);
}
double volume(){
return (pi*radius*radius)*height;
}
}
public class Main6_1 {
public static void main(String[] args){
Cylinder volu;
volu = new Cylinder();
volu.radius = 2.8 ;
volu.height = 5;
System.out.println("底圆半径="+volu.radius);
System.out.println("圆柱的高="+volu.height);
System.out.print("圆柱");
volu.area();
System.out.println("圆柱体体积 ="+volu.volume());
}
}class Cylinder
{
