Java Final Exam 7

/**7

* Compile an interface that can calculate the area and the

* and the four-polygon of this interface

* (including rectangle, parallel Quad, trapezoid)

**/

Public class test{public static void main (String[] args) {}}interface Figure {Double area (double a, double b);d Ouble 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;}} 

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Java Final Exam 7