(The Person, Student, Employee, Faculty, and Staff classes) Design a class named Person and its two subclasses named Student and Employee. Make Faculty and Staff subclasses of Employee. A person has a name, address, phone number, and e-mail address. A student has a class status (freshman, sophomore, junior, or senior). Define the status as a constant. An employee has an office, salary, and date hired. Use the MyDate class defined in Programming Exercise 10.14 – see the textbook - to create an object for date hired. A faculty member has office hours and a rank. A staff member has a title. Override the toString method in each class to display the class name and the person's name. Draw the UML diagram for the classes and implement them. Write a test program that creates a Person, Student, Employee, Faculty, and Staff, and invokes their toString() methods.

(Inheriting Interface vs. Inheriting Implementation) A derived class can inherit “interface” or “implementation” from a base class. How do inheritance hierarchies designed for inheriting interface differ from those designed for inheriting implementation?

(Account class)Create an Account class that a bank might use to represent customers’ bank accounts. Include a data member of type int to represent the account balance. Provide a constructor that receives an initial balance and uses it to initialize the data member. The constructor should validate the initial balance to ensure that it’s greater than or equal to 0. If not, set the balance to 0 and display an error message indicating that the initial balance was invalid. Provide three member functions. Member function credit should add an amount to the current balance. Member function debit should withdraw money from the Account and ensure that the debit amount does not exceed the Account’s balance. If it does, the balance should be left unchanged, and the function should print a message indicating "Debit amount exceeded account balance." Member function get_Balance should return the current balance. Create a program that creates two Account objects and tests the member functions of class…

(Richer Shape Hierarchy) The world of shapes is much richer than the shapes included inthe inheritance hierarchy of Fig. 19.3. Write down all the shapes you can think of—both two-dimensional and three-dimensional—and form them into a more complete Shape hierarchy with asmany levels as possible. Your hierarchy should have the base class Shape from which class TwoDimensionalShape and class ThreeDimensionalShape are derived. [Note: You do not need to write any codefor this exercise.] We’ll use this hierarchy in the exercises of Chapter 20 to process a set of distinctshapes as objects of base-class Shape. (This technique, called polymorphism, is the subject ofChapter 20.)

(Dynamic Binding vs. Static Binding) Distinguish between static binding and dynamicbinding. Explain the use of virtual functions and the vtable in dynamic binding

6. (Immutable Data Class Objects) Built-in types int, float, str and tuple are immutable. Data classes can simulate immutability by designating that objects of the class should be "frozen" after they're created. Client code cannot assign values to the attributes of a frozen object. Research "frozen" data classes, then reimplement this chapter's Complex class as a "frozen" data class. Show that you cannot modify a Complex object after you create it.

(Combining Class Time and Class Date) Combine the modified Time class of Exercise 17.7and the modified Date class of Exercise 17.8 into one class called DateAndTime. (In Chapter 19, we’lldiscuss inheritance, which will enable us to accomplish this task quickly without modifying the existing class definitions.) Modify the tick function to call the nextDay function if the time increments into the next day. Modify functions printStandard and printUniversal to output the dateand time. Write a program to test the new class DateAndTime. Specifically, test incrementing thetime into the next day.

(JAVA) What is the benefit of an abstract class?   Group of answer choices   A) There is a guarantee that all classes that inherit from the abstract class have the methods and fields of the abstract class.   B) They cannot be instantiated, so you only need to write the code for the fields and methods that are common to all classes that extend it. You also need to initialize those fields in a constructor.   C) All choices are correct.   D) All classes that extend the abstract class will automatically inherit all the methods from the abstract classes without need to implement them again.

[JAVA] Question 4: Write the source code of the classes ReportCurrentRevenue and ReportPastIncome. The ReportCurrentRevenue class is responsible from calculating the current amount of money to be gained if all the guests would leave from the hotel. The ReportPastIncome class is responsible from calculating the money gained so far from the previous visits of guests. Class Hotel will create one instance of this class and execute it in multithreaded fashion in its report method. You will code Hotel.report in the next question. Question 5: Write the source code of only the following methods of the class Hotel. The explanations of the methods you need to code are given below. Don’t forget to address the multithreading issues when coding. report: The details of this method are given in Question 4. restore: This method loads the Hashtable members and LinkedList visits from the path given by the fileName parameter. However, if there are ongoing multithreaded operations, it must first wait…