Create a class named BloodData that includes fields that hold a blood type (the four blood types are O, A, B, and AB) and an Rh factor (the factors are + and -). Create a default constructor that sets the fields to "O" and "+", and an overloaded constructor that requires values for both fields. Include get and set methods for each field. Save this file as BloodData.java. Create an application named TestBlood Data that demonstrates each method works correctly. Save the application as TestBloodData.java.

Create a class called GraduateStudent that has the following attributes: GraduateStudent   String - FirstName String - LastName String - Major String - Minor Integer - UIN Double - GPA   GraduateStudent() GraduateStudent(FirstName, LastName, Major, Minor, UIN, GPA) calculateFinalGrade(Double, Double, Double) - Double getFirstName() - String setFirstName(String) - void getLastName() - String setLastName(String) - void getMajor() - String setMajor(String) - void getMinor() - String setMinor(String) - void getUIN() - Integer setUIN(Integer) - void getGPA() - Double setGPA(Double) - void toString() - String compareTo(GraduateStudent) - Integer equals(GraduateStudent) - Boolean Note: The calculate final grade takes 3 doubles, each of which will be an exam grade out of 100. The first two exams are worth 25% of the final grade, and the third exam is worth 50% of the final grade. You should return this final grade as a double.

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2. Create another class named testRoom that uses the above class. This class should have a main() method that behaves as follows: 1. Create two instances of the Pay class: Motel Six that uses the default constructor, and Ramada that creates an instance with $550 as the price of a room. 2. Change the price of the Motel Six room to $265. 3. Change the amenities for the Ramada to $240. 4. Calculate the total cost for both instances. 5. Display the standard room fee, amenities, and total cost for both instances with appropriate labels.

Create a new Teller Class Build a new Teller class(“Teller.java”). This class will be a sub-class of Employee. The Teller class should have all the same properties as an Employee as well as two new properties: hoursWorked and shift. HoursWorked is the total hours that this teller worked this week, and shift is either “day” or “evening” shift. Make sure to add 2 constructors and a display() method. Do not include a main() method in the Teller class. Test out this Teller class, by building a separate Tester class called TellerTester stored in a new file called ( “TellerTester.java”. This TellerTester class will only have a main() method, that will instantiate a Teller object, pass all the data to the Teller constructor, and lastly call the Teller display() method; just these 3 lines.

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Create a class called Employee that includes three instance variables—afirst name (type String), a last name (type String) and a monthly salary (double). Provide aconstructor that initializes the three instance variables. Provide a set and a get method for eachinstance variable. If the monthly salary is not positive, do not set its value. Write a test applicationnamed EmployeeTest that demonstrates class Employee’s capabilities. Create two Employeeobjects and display each object’s yearly salary. Then give each Employee a 10% raise and displayeach Employee’s yearly salary again.

Expert this is warming, don't use any AI platform and don't give plagiarised response to me. If I see plagiarism and AI detection I'll report your account and reduce rating.You have a basic User class for a social media platform. Your task is to enhance the class by introducing a new method called 'post_status.' This method should take a single parameter, which is the status message that the user wants to post. The objective is to implement this method to update the user's status.Next, instantiate a new object of the User class, naming it 'SocialUser.' Utilize the extended class with the newly added 'post_status' method. Your next step is to post three distinct status messages for 'SocialUser'—namely, 'Excited for the weekend!', 'Just finished a great book!', and 'Exploring new hobbies!'To conclude, utilize the 'display_info' method to showcase the updated information about 'SocialUser.' Verify that the output includes details about the newly added status messages, ensuring that they…

Class Circle           A Circle will have a radius.  The class will be able to keep track of the number of Circle objects created.  It will also hold the total of the circumferences of all the Circle objects created.          It will allow a client to create a Circle, passing in a double value for the radius into the Circle constructor. If the value for the radius that is passed in is 0 or negative, then the radius will be set to a value of 999.  The constructor should add 1 to the count of the number of Circles created. The constructor should call a method to calculate the circumference and then add the circumference for that object to an accumulator.    In addition to the constructor, the Circle class must have the following methods that return a boolean value:   isCongruent(Circle c) – Compares two Circle objects to determine if they are congruent (radii are equal). isValid() – the radius may not be 0 or negative.  equals (Triangle t) – compares two Triangle objects…