1: /** 2: * An interface for methods that return 3: * the perimeter and area of an object. 4: * 5: * @author Mark Young (A00000000) 6: */ 7: public interface Measurable { 9: /** 10: * The perimeter of this measurable object. 11: * 12: * @return the permimeter of this object 13: */ 14: public double getPerimeter(); 15: 16: /** 17: * The area of this measurable object. 18: * 19: * @return the area of this object 20: */ 21: public double getArea(); 23: }