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- The play method in the Player class of the craps game plays an entire game without interaction with the user. Revise the Player class so that its user can make individual rolls of the dice and view the results after each roll. The Player class no longer accumulates a list of rolls, but saves the string representation of each roll after it is made. Add new methods rollDice, getNumberOfRolls, isWinner, and isLoser to the Player class. The last three methods allow the user to obtain the number of rolls and to determine whether there is a winner or a loser. The last two methods are associated with new Boolean instance variables (winner and loser respectively). Two other instance variables track the number of rolls and the string representation of the most recent roll (rollsCount and roll). Another instance variable (atStartup) tracks whether or not the first roll has occurred. At instantiation, the roll, rollsCount, atStartup, winner, and loser variables are set to their appropriate…There is a class called Roster whose constructor that takes a List of tuples with the names of students and their grades in the class. for example -- [("Richard",98), ("Benny",55),("Katie",87),("Sally",76)]. Create an instance of the Roster class, including the following students and their respective grades, and store it in the variable mathClass: Jacob,65 Frankie,86 Lina,94 Arnold,63 Amanda,87 using pythonA pet shop wants to give a discount to its clients if they buy one or more pets and at least five other items. The discount is equal to 20 percent of the cost of the other items, but not the pets. Use a class Item to describe an item, with any needed methods and a constructor public Item(double price, boolean isPet, int quantity) An invoice holds a collection of Item objects; use an arraylist to store them. In the Invoice class, implement methods public void add(Item anItem) public double getDiscount() Write a program that prompts a cashier to enter each price and quantity, and then a Y for a pet or N for another item. Use a price of -1 as a sentinel. In the loop, call the add method; after the loop, call the getDiscount method and display the returned value.
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- 1.A) The median of a set of integers is the middle-most integer in size. That is, half the integers in the set are less than or equal to the median, and half the integers are greater than or equal to the median. For example, the median of {99, 1, 10, 6, 2} is 6 since 1 and 2 are smaller than 6 and 10 and 99 are larger than 6. Implement a method median( ) with no parameters that finds and returns the median of the integers in a data array. Use this keyword in meaningfully. Assume that the data array is an instance variable of Data class. Write a parameterized constructor to allocate and assign values to data array. Assume that the array has odd length. Write main () in a separate class constructor to use the Data class.Use NetBeans Note for all the above User-Defined Classes: • Provide appropriate validation code so the right values get populated in the instance variables. For example, the payrate should not be negative. Write a Java application (Client) program with a static method called generateEmployees( ) that returns a random list of 10 different types of Employee objects. You would use an ArrayList to store the employee objects that will be returned. Use a for loop to populate randomly different types of employee objects with some random data. You could possibly think of a range of values like 1 – 4. If random value is 1, create a HourlyEmployee object with some randomly generated data, if 2, a SalariedEmployee object with some random data and so on. I would leave it to your ingenuity to generate and populate these different Employee objects with other data like name etc. As these objects are generated, add them to your data structure (array or ArrayList that you are using). Finally, the…pet shop wants to give a discount to its clients if they buy one or more pets and at least five other items. The discount is equal to 20 percent of the cost of the other items, but not the pets.Use a class Item to describe an item, with any needed methods and a constructor public Item(double price, boolean isPet, int quantity)An invoice holds a collection of Item objects; use an array list to store them. In the Invoice class, implement methods public void add(Item anItem)public double getDiscount()Write a program that prompts a cashier to enter each price and quantity, and then a Y for a pet or N for another item. Use a price of –1 as a sentinel. In the loop, call the add method; after the loop, call the getDiscount method and display the returned value.
- Create another class Teacher that will inherit properties and functionalities from personclass. Teacher class will have experience data member and an array of subjects taught bythat particular teacher.. Provide setter and getter methods for all data members.. The teacher is allowed to teach at least 2 subjects.. Perform input validation in setSubject() function so the user will not be able to inputanything except string value.. Default experience of the teacher will be 2 years.. The parameterized constructor of person class will be called using the teacher classconstructor. This will initialize all the data members of person class.. Using teacher class object display every info of teacher.Implement the following tasks by using concepts of object-oriented programming (Java). i. Create a generic class with a type parameter that simulates drawing an item at random out of a box. This class could be used for simulating a random drawing. For example, the box might contain Strings representing names written on a slip of paper, or the box might contain Integers representing a random drawing for a lottery based on numeric lottery picks. Create an add method that allows the user of the class to add an object of the specified type along with an isEmpty method that determines whether or not the box is empty. Finally, your class should have a drawItem method that randomly selects an object from the box and returns it. If the user attempts to drawn an item out of an empty box, return null. Write a main method that tests your class.ii. The following is a short snippet of code that simulates rolling a 6-sided dice 100 times. There is an equal chance of rolling any digit from 1 to…Create a class called Student that models a student at Carleton University. A student's state consists of a name (String), id number (int) and a list of grades (array of doubles). Your class must have a constructor that has three input parameters (name, id and grade list) and sets the initial state for the object. Include a toString() method that returns a useful string representation of a student object. The string representation should contain the student's name, ID number, and the number of grades they have recorded (so NOT include all the grades). Include a gradesInRange(double lower, double upper) method that returns the number of grades that this student has that are in the range [lower,upper]. That is, the it returns the number of grades that are greater than or equal to lower and less than or equal to upper. Example Usage: Student s = new Student("cat", 100123987, new double[]{81.2, 93.2, 76,2, 84.6});int num_A_grades = s.gradesInRange(80,100);// assert num_A_grades will be 3