[6 points] UML, Inheritance & Encapsulation The UML diagram specifies a small class hierarchy for a game. A student’s implementation follows. The code does not match the diagram in three places. For each, name the member and briefly state what’s wrong. ┌────────────────────────────────┐ │         GameCharacter                                                    │ ├────────────────────────────────┤ │ # health: int                                                                 │ │ # name: String                                                             │ ├────────────────────────────────┤ │ + GameCharacter(String, int)                                       │ │ + attack(): void                                                             │ │ + getName(): String                                                     │ └────────────────────────────────┘                  ▲                  │         ┌────────────────┐         │     Warrior                          │         ├────────────────┤         │ – armor: int                        │         ├────────────────┤         │ + Warrior(String, int, int)  │         │ + attack(): void                 │         └────────────────┘ public class GameCharacter {     private int health;     public String name;     public GameCharacter(String name, int health) {         this.name = name;         this.health = health;     }     public void attack() {         System.out.println(name + ” attacks!”);     }     public String getName() {         return name;     } } public class Warrior extends GameCharacter {     private int armor;     public Warrior(String name, int health, int armor) {         this.name = name;         this.health = health;         this.armor = armor;     } } Hint : Compare access specifiers and function implementations in both.

[2 pts] Write any two differences between Java and Python ( excluding syntax ) 

[2 pts] What is overloading and overriding? 

[2 pt] What is the purpose of the super keyword?

[2 pt] What does the keyword final mean when applied to a variable?

[1pt]  All methods of an abstract class must be declared as abstract methods. (True or False?)

[12 points] Generics  A bubble tea shop serves customers first-come, first-served. Write a generic class BobaLine that models a fixed-capacity order line (a FIFO queue) using an ArrayList for the underlying representation. An enqueue is a customer joining the line; a dequeue is the barista serving the next order.  Implement: The constructor, which takes the capacity as an argument. enqueue — adds the passed-in argument to the tail of the line if there is room; otherwise prints “Order line is full. Cannot add new order.” dequeue — if the line is not empty, removes the element at the head of the line and returns it; otherwise prints “Order line is empty. Cannot serve an order.” and returns null. isEmpty — returns true if the line is empty and false otherwise. As a reminder, the ArrayList class provides the following methods that you are can also use. add(E elem) — appends elem to the current end of the list remove(int index) — removes the element at the specified position and returns it size() — returns the number of elements in the list isEmpty() — returns true if the list is empty and false otherwise

Statements that explain how the speaker feels without passing judgment on the receiver are called I-STATEMENTS.

Reminder:    Have you done Start Here Bonus A?           Yes or no   ___________ Bonus A is Due:  Sat. Aug. 22   for 5 bonus points   or   if received by Wed. Aug. 26 for 2.5 bonus points

Sending messages through facial expressions, body language, gestures, tone, and volume of voice is NONVERBAL COMMUNICATION.