刚学java，乱写的，大家不要笑:blowzy:
SHAPE.java
interface SHAPE
{
static final double PI=3.1415926;
//r是圆半径，h是圆柱的高
int area(int r, int h);//求面积
int volume(int r, int h);//求体积
}
CIRCLE.java
class CIRCLE implements SHAPE
{
public int area(int r,int h)
{
return (int)(r*r*PI);
}
public int volume(int r, int h)
{
return 0;
}
};
CYLINDER.java
class CYLINDER implements SHAPE
{
public int area(int r, int h)
{
return (int)(2*(r*r*PI+r*h*PI));
}
public int volume(int r, int h)
{
return (int)(2*h*(r*r*PI+r*h*PI));
}
};
