8. Square draw() rotate() setLength() getLength() Circle draw() getRadius() setRadius() Shape Erase() Move() setX() setY() setColor() getPos() getColor() Triangle draw() rotate() setLength() getLength() Hexagon draw() rotate() setLength() getLength()

10. Reptile move() eat() reproduce() Animal move() eat() reproduce() Mammal move() eat() reproduce() Fish move() eat() reproduce() LionTigerBear

26. Pretend this method exists in our Shape implementation!

27. Same as Shape.rotate()

28. partial overriding

30. Subclass SuperclassInterface

42. ClassInterface Models an object with properties and behavior Models a role and defines a set of responsibilities Factors out common properties and behavior of similar objects Factors out common behavior, but not properties, of usually dissimilar objects Declares methods and may define some or all of them Declares but does not define methods Can only extend one superclassCan extend multiple interfaces Can implement any number of interfacesNo implementation