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