{}
// Online Java Compiler
// Use this editor to write, compile and run your Java code online
class Main {
public interface Shape {
double perimeter();
double area();
}
public abstract class Polygon implements Shape {}
public class ConvexPolygon extends Polygon {
@Override
public double perimeeter() { return 0d; }
@Override
public double area() { return 0d; }
}
public static void main(String[] args) {
System.out.println("perimeeter should throw an error because it has a typo and doesn't actually override or implement anything");
}
}