Create a class hierarchy for base class Shape and derived classes Triangle, Rectangle, Circle and Square Demonstrate concepts of abstraction, overriding, polymorphism and static field May use methods such as 'calculateArea()', 'calculatePerimeter()', etc. as needed for demonstrating concepts May use static field to represent color of the class or name of the class to represent concept of static fields

:Single inheritance means one class inheriting from one super classes more classes inheriting from one super class more classes inheriting from more super classes None of the above

Variables with the same name as variables that have been declared in a superclass and variables that have been defined in a subclass are considered to be the same variable.

Class Relationships Exercises 1. In Java, we use inheritance for "is-a" relationships. Containment, on the other hand, indicates that one object has another object. These are "has-a" relationships. For the following relationships, determine if they are a "is-a" or a "has-a" relationship: o bicycle - vehicle o car - engine o pizza - topping o food - pizza o dog - mammal 2. Share with someone else 3 other examples for each of the following relationships: o Inheritance ("is-a" relationship) o Containment ("has-a" relationship) 3. public class PersonInfo { protected String firstName; protected String birthdate; } public class ChildInfo extends PersonInfo { private String schoolName; } public class MotherInfo extends PersonInfo { private String spousename; private ChildInfo children1; private ChildInfo children2; private ChildInfo children3; ... } A. Draw the relationships for the classes above using UML. If a class inherits from another class, draw an open arrow pointing to the base class…

When to declare abstract class?   Topic software engineering