题目描述:
设置圆柱的底面半径和高,输出圆的面积和圆柱体积。
代码描述:
public class Circle {
public double radius;
public Circle(){
radius=1.0;
}
public void setRadius(double radius) {
this.radius = radius;
}
public double getRadius() {
return radius;
}
public double findArea(){
return 3.14*radius*radius;
}
}
public class Cylinder extends Circle{
public double length;
public Cylinder(){
length=2.0;
}
public void setLength(double length) {
this.length = length;
}
public double getLength() {
return length;
}
public double findVolume() {
return 3.14*radius*radius *length;
}
public static void main(String[] args) {
Cylinder cylinder=new Cylinder();
System.out.println("圆的面积:"+cylinder.findArea());
System.out.println("圆柱体积:"+cylinder.findVolume());
}
}