A Java class defines what objects of the class know(____________ ) and can do (____________).
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A: Dear Student, The answer to your question is given below -
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A: The answer is given in the below steps for your reference.
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A: Dear Student, The answer to your question is given below -
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A: Code Sample Output
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A: Dear Student, The required code segment is given below -
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Q: program
A: The updated ShoppingCartPrinter.java class is given below:
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- Create a class “Main” having main method to perform following tasks. Create two objects of Subject class having value “Math, 99.9” and “Physics, 98.9” respectively. Display the values of both objects Change the value of object from 99.9 to 89.9 Compare both objects and display the values of the subject which have lowest score. code:- //Java programpackage subject;//class definitionpublic class Subject {//instance variableString subject;double score;//method to set the name and scorepublic void setSubject(String n1,double n2){subject=n1;score=n2;if((n2<0.0) || (n2>100.0)){System.out.println("Incorrect score");score=0.0;}}//method to set the scorepublic void setScore(double n){score=n;if((n<0.0) || (n>100.0)){System.out.println("Incorrect score");score=0.0;}}//method to print the resultpublic void display(){System.out.println("Name: "+subject+", Score: "+score);}//method to get the scorepublic double getScore(){return score;}//method to compare teh score and retun true…Using oop in java Create a class “Main” having main method to perform following tasks. Create two objects of Subject class having value “Math, 99.9” and “Physics, 98.9” respectively. Display the values of both objects Change the value of object from 99.9 to 89.9 Compare both objects and display the values of the subject which have lowest score.Q1: Write a Java class called Machine which has: 2 instance variables brandName and power (to check if it is On or not) 2 constructors (a multi-argument constructor and a zero-argument one) getters for the two instance variables a setter for brandName 2 methods switchOn() and switchOff() which change the value of power a method called display() to print the status of the machineQ2: Write a Java class called TestMachines which has a main method to test yourcode as follows: create a Machine object to be initialized to "Dell" brand and to be Off. create another Machine object using the zero-arg constructor. Then change itsbrand to "Sharp" and switch it on. print the status of the 2 machines. declare and create an array that can hold up to 3 machines fill the array with suitable data print how many machines of brand "Dell" declare and create an ArrayList of machines fill the list with suitable data print how many machines are On.
- Write a program named SalespersonDemo that instantiates objects using classes named Real EstateSalesperson and GirlScout. Demonstrate that each object can use a SalesSpeech() method appropriately. Also, use a MakeSale() method two or three times with each object, and display the final contents of each objects data fields. First, create an abstract class named Salesperson. Fields include first and last names; the Salesperson constructor requires both these values. Include properties for the fields. Include a method that returns a string that holds the Salespersons full name—the first and last names separated by a space. Then perform the following Create two child classes of Salesperson: Real EstateSalesperson and Girl Scout. The Real EstateSalesperson class contains fields for total value sold in dollars and total commission earned (both of which are initialized to 0), and a commission rate field required by the class constructor. The Girl Scout class includes a field to hold the number of boxes of cookies sold, which is initialized to 0. Include properties for every field. Create an interface named ISell able that contains two methods: SalesSpeech() and MakeSale(). In each Real EstateSalesperson and Girl Scout class, implement SalesSpeech() to display an appropriate one- or two-sentence sales speech that the objects of the class could use. In the Real Estatesalesperson class, implement the MakeSale() method to accept an integer dollar value for a house, add the value to the Real EstateSalespersons total value sold, and compute the total commission earned. In the Girl Scout class, implement the MakeSale() method to accept an integer representing the number of boxes of cookies sold and add it to the total field.Create a java class name is Bugs that have Instance variables Constructors Automatic code generation Accessor Methods Mutator Methods move method turn method Bug Class: a bug has a code, original location at a point with integer coordinates, faces north, east,south, or west and keeps a record of all its current movement position. The class generate a uniquecode for each new “bug” object created starting with value “b-100”. It also includes the followingmethods:- A default constructor that initializes bug’s code to “b-xxx”; where “xxx” is the next codesequence number in the class, positions to (0,0), and direction to WEST.- A constructor that is given bug’s information: starting location, facing direction and generatesbug code similarly to the default constructor.- Accessor methods to access all the instance variables and the simulated movements of thebug.- Mutator methods that change the instance variables to given values and they make the changefor only suitable values.- turn method…A shopkeeper in a fruit shop wants to find total profit he has gained after selling all the fruits. þevelop a java program to find the profits using the concept of interface based on the following instructions. Save the project/file as sellerYour ID. A) Interface name: Fruitshop Member Method: - to calculate and return profit B) Class name: Shopkeeper implements Fruitshop Member variables: sellingprice, costprice Member Methods: - Constructor to initialize member variables - to calculate and return profit profit = sellingprice costprice C) Controlling class sellerYour ID - To create an object of Shopkeeper - To print profit of Shopkeeper
- Create java code a new class called "Module" in which you add the following attributes: Code Name Number_students 2.Create another class called principle_program in which you create two instances of the class Module called ITP and POP. class principle_program { public static void main(String args[]) { //create two instances of the class Module } }PLEASE USE 2 CLASSES (you do not have to answer quickly please take your time) In the Game of 21, a player is dealt two cards from a deck of playing cards and then optionally givena third card. The player closest to 21 points without going over is the winner. Use object-orienteddevelopment to create a Game of 21 application that allows the user to play the Game of 21 against thecomputer. The Game of 21 application and its objects should:• Deal a card from a deck of playing cards by generating a random number between 1and 13. A 1 corresponds to an Ace, numbers 2 through 10 correspond to those cards,and 11 through 13 corresponds to Jack, Queen, and King. The Jack, Queen, and Kinghave a value of 10 in the Game of 21. An Ace can have a value of either 1 or 11.• Allow the player to stay with two cards or be given a third card.• Announce the winner.• Play rounds until the player says to stopWrite a java class named Account which contains: private data field named number of type int private data field named balance of type double no argument constructor An argument constructor to create Account object with specified number and balance. A method toString() that returns number and balance as a String Set and Get Methods for all the data fields
- Write a java program print Bank Account Details of a Customer using this keyword Create a class named BankAccount Declare instance variables Account_Holder_Name, Account_No, Balance Define a parametrized constructor to initialize the above customer dedtails Define a method named MinimumBalance with the return type of BankAccount class check the balance is less than 10000 or not Create a class for Main method Define main method Create the object b for BankAccount class Create a reference varibale b1 for BankAccount class to store the returned object from MinimumBalance method Print the following message using b1 if balance is lessthan 10000, print this message "Your Balance is less than minimum balance" if balance is greaterthan 10000, print this message "Your credit is good, You are our High priority customer"Focus on classes, objects, methods and good programming style. Program has to be written in basic python. Your task is to create a BankAccount class. Class name BankAccount Attributes __balance float __pin integer Methods __init_() get_pin() check_pin() deposit() withdraw() get_balance() The bank account will be protected by a 4-digit pin number (i.e. between 1000 and 9999). Thepin should be generated randomly when the account object is created. The initial balance shouldbe 0.get_pin()should return the pin.check_pin(pin) should check the argument against the saved pin and return True if itmatches, False if it does not.deposit(amount) should receive the amount as the argument, add the amount to the accountand return the new…JAVA CODING QUESTION. Object-oriented and constructor chaining!!! Build a "country" class. A country object will have 2 attributes its name and an array of the names of football stadiums in the country You have to assume there is a football stadium class that consists of just one constructor that has only one input parameter, which is its name. Add the following constructors to the country class: 1) Country(String country_name) //country has no football stadium 2)Country(String country_name, String football_stadium_name) //country has exactly 1 football stadium 3)Country(String country_name, football_stadium[] football_stadiums) //country has multiple football stadiums YOU HAVE TO USE CONSTRUCTOR CHAINING!! After coding answer the following question in words: When making a country object what is the maximum amount of constructor methods that are called and what is the minimum amount that will be called. Write an example for both situations