/**7
* 編寫一個可以計算面積和體積的接口，
* 以及實現這個接口的四邊形類
* (包括矩形，平行四邊形、梯形)
**/
public class Test{
public static void main(String[] args){
}
}
interface Figure{
double Area(double a, double b);
double Volume(double a, double b, double c);
}
class Rectangle implements Figure{
private double a, b, c;
public double Area(double a, double b)
{
this.a = a;
this.b = b;
return (a * b);
}
public double Volume(double a, double b, double c)
{
this.a = a;
this.b = b;
this.c = c;
return a * b * c;
}
}
class parallelogram implements Figure{
private double a, b, c;
public double Area(double a, double b)
{
this.a = a;
this.b = b;
return (a * b);
}
public double Volume(double a, double b, double c)
{
this.a = a;
this.b = b;
this.c = c;
return a * b * c;
}
}
