public interface Area {
x05public double calculateArea();
}
public class MyRectangle {
double length;
double width;
public MyRectangle(double length,double width){
x05 this.length = length;
x05 this.width = width;
}
public double getArea(){
x05 double a = this.length * this.width;
x05 System.out.println("矩形面积为"+a);
x05x05x05 return a;
}
public static void main(String[] args) {
x05x05x05MyRectangle r = new MyRectangle(1.5,1.5);
x05x05x05r.getArea();
x05x05}
}
public class MyCircle implements Area{
x05 double banjing;
x05
x05 public Cone(double banjing){
x05x05 this.banjing = banjing;
}
x05
x05 @Override
x05x05public double calculateArea() {
x05x05 double a = this.banjing * this.banjing * 3.14;
x05x05 System.out.println(a);
x05x05x05return a;
x05x05}
x05
x05 public static void main(String[] args) {
x05x05 MyCircle m = new MyCircle(3.5);
x05x05 c.calculateArea();
x05}
}
