1: package interfaces;
3: // Measurable.java
4: // week09 code
5: // a very simple interface to experiment with
6: // See also:
7: // Circle.java
8: // Rectangle.java
9: // MeasuringStuff.java
11: // a class is measurable if
12: public interface Measurable {
14: // it has a method like this (to get an object's area)
15: public double getArea();
17: // and it has a method like this (to get the object's perimeter)
18: public double getPerimeter();
20: }