Write a class named IceCreamcup that implements the Customizable interface. The class should have the following private instance variables. Do NOT give any method implementations for this question, but only declare the instance variables. Do NOT initialize the instance variables -- except nCups below. • A String variable name describing the ice cream name • A List of Flavor s added to the cup. Name it fList Additionally, define the following static variable: • An int nCups describing the total number of ice cream cups instantiated. Initialize this variable
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- Build a class called BankAccount that manages checking and savings accounts. Attributes: customer name, the customer's savings account balance, and the customer's checking account balance.Constructor with parameters (self, new_name, checking_balance, savings_balance) deposit_checking(self, amount) - add parameter amount to the checking account balance (only if positive)deposit_savings(self, amount) - add parameter amount to the savings account balance (only if positive)withdraw_checking(self, amount) - subtract parameter amount from the checking account balance (only if positive)withdraw_savings(self, amount) - subtract parameter amount from the savings account balance (only if positive)transfer_to_savings(self, amount) - subtract parameter amount from the checking account balance and add to the savings account balance (only if positive)In this task, you will create your own interface, which is not provided in the Java library. Let’s start with a simple example. Say we have a collection of animal classes, with each class represents a kind of animal. They all share a common ability of “speak”. Dog speak in the way of “Woof! Woof!”, cats speak in the way of “Meow! Meow!”, etc. In order to capture this common characteristic, we need an interface named Speakable: public interface Speakable { // put the method header here } Think about what method is needed for the Speakable interface? (what method can describe the speakable feature? ) We simply need one method speak() to print out the way that the animal “speaks”. Put the method header in the interface body. This method does not take any parameter and does not return any value. Be reminded that you only need to put the method header with a semicolon (abstract method) into the interface. BE NOTED: Adding an interface is different from adding a class. You need to click File…Which of the following cases is most like the adapter pattern? A. If you have an interface called Duck, and have many ducks that implement the duck interface. All of these ducks must have the behaviour “quack” but for some ducks, like a Mallard, this must result in a quack, where for a rubber duck it must result in a squeak. We decide to delegate the quack method to another interface, which can be implemented either in a concrete class that returns a quack or a concrete class that returns a squeak. B. None of these are like the adapter pattern. C. We have a large collection of Ducks. We want to look at them one by one and hear them quack. We write a piece of code that iterates through them all, and as we encounter each one, we have it invoke the quack method. D. If we have an interface called Duck. We need to give an object to a user that can quack like a duck. All we have is Turkeys. We create a special class that implements the duck interface, and to implement the quack…
- Write a class called Circle that contains:a. Three private instance variables: radius (of the type double), color (of thetype String), and area (of type double).b. Two constructors - a default constructor with no argument (default value of radiusis 2.0, and color is Green) and a parameterized constructor, which initializes onlythe radius and the color variables.c. Getter and setter for the radius and color variables.d. Two public methods: calculateArea(), and getPerimeter, which return the areaand perimeter of a circle instance, respectively. Both methods have return.Then write a driver class that tests the Circle class. In the driver class, create two objectsof Circle class, one that tests the default constructor of the Circle class (here no user inputis required) and then get the color, radius, area, and perimeter of that object and displaythem. The second object should test the parameterized constructor (here you need to ask userto give you input to initialize the class variables).…Which of the following cases is most like the strategy pattern? A. If you have an interface called Duck, and have many ducks that implement the duck interface. All of these ducks must have the behaviour “quack” but for some ducks, like a Mallard, this must result in a quack, where for a rubber duck it must result in a squeak. We decide to delegate the quack method to another interface, which can be implemented either in a concrete class that returns a quack or a concrete class that returns a squeak. B. If we have an interface called Duck. We need to give an object to a user that can quack like a duck. All we have is Turkeys. We create a special class that implements the duck interface, and to implement the quack method we simply call the turkey’s gobble method. C. None of these are like the strategy pattern. D. We have a large collection of Ducks. We want to look at them one by one and hear them quack. We write a piece of code that iterates through them all, and as we encounter…In Java, please. Complete the Course class by implementing the findStudentHighestGpa() method, which returns the Student object with the highest GPA in the course. Assume that no two students have the same highest GPA. Given classes: Class LabProgram contains the main method for testing the program. Class Course represents a course, which contains an ArrayList of Student objects as a course roster. (Type your code in here.) Class Student represents a classroom student, which has three fields: first name, last name, and GPA. (Hint: getGPA() returns a student's GPA.) Note: For testing purposes, different student values will be used. Ex. For the following students: Henry Nguyen 3.5 Brenda Stern 2.0 Lynda Robison 3.2 Sonya King 3.9 the output is: Top student: Sonya King (GPA: 3.9) LabProgram.java import java.util.Scanner; public class LabProgram { public static void main(String args[]) { Scanner scnr = new Scanner(System.in); Course course = new Course(); int…
- Write the Boat class in Java Eclipse. A Boat has a registered name, a number of cabins, and a length.a) Define the instance variables (data fields).b) Include 2 constructors (default and one that receives the Boat registeredname, number of cabins and its length as an input).c) Write accessors (getters) and mutators (setters) methods for the instancevariables on your own. Verify/correct the answers with the help of Eclipse.Write a class encapsulating the concept of a student, assuming student has the following attributes: a name, a social security number, and a GPA (for instance 3.5). Include a constructor, the accessors and mutators, and methods toString() and equals(). Write a client class to test all the methods in your class.Consider a class that could be used to play a game of hangman. The classhas the following attributes:- the secret word- the disguised word, in which each unknown letter is replaced with a question mark (?). For example, if the secret word isabracadabra and the letters a, b, and e have been guessed, the disguisedword would be ab?a?a?ab?a.- the number of guesses made- the number of incorrect guessesIt will have the following methods:- makeGuess(c) guesses that character c is in the word.- getDisguisedWord returns a string containing correctly guessed letters in their correct positions and unknown letters replaced with ?.- getSecretWord returns the secret word.- getGuessCount returns the number of guesses made.- isFound returns true if the hidden word has been discovered.a. write method heading for eeach methodb. write preconditions and postconditions for each methodc. write some java statements that test the classd. Implement the class.2. Write an application that plays the game of…
- Write a complete program for the description given below. Consider a Billing class that implements an interface Payable having a method getTotalPayment Amount(). Besides this, you have a Doctor class with private instance variables (docID, docName, and docFee) and a public getDoc() method, Patient class with private instance variables (pName, pID. pDisease), Medicine class with private instance variables (medID, medName, medQty, medPrice), and Medical Test class with private instance variables (testID, testName, testPrice). Each of these classes has the toString() method to display the information of its object. The Billing class is having "Has A" relationship with the other four classes (Doctor, Patient, Medicine, and MedicalTest) mentioned above. The getPayment Amount() method of Billing class returns the total billing amount that includes doc fee, medicine cost, and medical test fee that a patient has to pay. After implementing these classes, you are required to do the following in…Implement a class Season that represents a season during a specified year. For purposes of thisproblem, assume that the seasons in each year are, in order, 'Winter', 'Spring', 'Summer', 'Autumn' .__init__, __repr__A Season object is created by calling the constructor and supplying two optional arguments:1. season, defaults to 'Winter'2. calendar year, an int , defaults to 2023For the __repr__ , see the usage below: The next and prev methods modify a Season object by changing it to the next season or previousseason in sequence, respectively. Note that the seasons can "roll over" or "roll back" and that this maychange the year by +/-1. 1. During each year, the seasons occur in this sequence: 'Winter', 'Spring', 'Summer', 'Autumn' 2. next - change to next season, if the current season is Autumn then year will increase by 1 3. prev - change to previous season, if Winter then year will decrease by 1 Implement the == operator ( __eq__ method) to compare two Season…I have provided you with 3 interfaces (HasLegs, HasWings, and BreathesUnderwater) and a Tester class. I want you to create 6 new classes: • 2 that implement HasLegs • 2 that implement HasWings • 2 that implement BreathesUnderwater For each of the classes, you will have to implement the methods that the interface dictates. In addition, override toString so that it prints out a simple message describing what the object is. See the example output of my implementation below for an idea how to do that. The Tester class creates 3 ArrayLists, one for each interface. It also loops through each ArrayList and prints out its contents using toString and the interface methods. In between those two chunks of code, you’ll see a //TODO: comment. It is there that I want you to create one object for each of the 6 classes you created and add that object to the appropriate ArrayList. Once you have done all that, you should be able to run your program and see output like the following: I am a table. I have…