Modify the Item class to maintain a priority value. This value must also be set in the constructor. private int num; public Item(int num) { this.num = num; } public int GetNum() { return num; }
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OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
Modify the Item class to maintain a priority value. This value must also be set in the constructor.
private int num;
public Item(int num)
{
this.num = num;
}
public int GetNum()
{
return num;
}
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- public class Book { protected String title; protected String author; protected String publisher; protected String publicationDate; public void setTitle(String userTitle) { title = userTitle; } public String getTitle() { return title; } public void setAuthor(String userAuthor) { author = userAuthor; } public String getAuthor(){ return author; } public void setPublisher(String userPublisher) { publisher = userPublisher; } public String getPublisher() { return publisher; } public void setPublicationDate(String userPublicationDate) { publicationDate = userPublicationDate; } public String getPublicationDate() { return publicationDate; } public void printInfo() { System.out.println("Book Information: "); System.out.println(" Book Title: " + title); System.out.println(" Author: " + author); System.out.println(" Publisher: " + publisher); System.out.println(" Publication…// This class discounts prices by 10% public class DebugFour4 { public static void main(String args[]) { final double DISCOUNT_RATE = 0.90; int price = 100; double price2 = 100.00; tenPercentOff(price DISCOUNT_RATE); tenPercentOff(price2 DISCOUNT_RATE); } public static void tenPercentOff(int p, final double DISCOUNT_RATE) { double newPrice = p * DISCOUNT_RATE; System.out.println("Ten percent off " + p); System.out.println(" New price is " + newPrice); } public static void tenPercentOff(double p, final double DISCOUNT_RATE) { double newPrice = p * DISCOUNT_RATE; System.out.println"Ten percent off " + p); System.out.println(" New price is " + newprice); } }public class Author2 {3 private String name;4 private int numberOfAwards;5 private boolean guildMember;6 private String[] bestsellers;78 public String Author()9 {10 name = "Grace Random";11 numberOfAwards = 0;12 guildMember = false;13 bestsellers = {"Minority Report", "Ubik", "The Man in the HighCastle"};14 }1516 public void setName(String n)17 {18 name = n;19 }20 public String getName()21 {22 return name;23 }2425 public void winsAPulitzer()26 {27 System.out.println(name + " gave a wonderful speech!");28 }29 } 1. This class includes a constructor that begins on line 8; however, it contains an error. Describe the error. 2. Rewrite the constructor header on line 8 with the error identied in part c of this question corrected. 3. Demonstrate how you might overload the constructor for this class. Write only the header. 4. Write a line of Java code to create an instance (object) of this class. Name it someAuthor. 5. Write a line of code to demonstrate how you would use the someAuthor object…
- Charge Account ValidationCreate a class with a method that accepts a charge account number as its argument. The method should determine whether the number is valid by comparing it to the following list of valid charge account numbers:5658845 4520125 7895122 8777541 8451277 13028508080152 4562555 5552012 5050552 7825877 12502551005231 6545231 3852085 7576651 7881200 4581002These numbers should be stored in an array. Use a sequential search to locate the number passed as an argument. If the number is in the array, the method should return true, indicating the number is valid. If the number is not in the array, the method should return false, indicating the number is invalid.Write a program that tests the class by asking the user to enter a charge account number. The program should display a message indicating whether the number is valid or invalid.Python Code please Point of Sale Write a program that will manage the point of sale in a store. Build the ItemToPurchase class with the following: Attributes item_name (string) item_price (int) item_quantity (int) Default constructor Initializes item's name = "none", item's price = 0, item's quantity = 0 Method print_item_cost() Example of print_item_cost() output:Bottled Water 10 @ $1 = $10 Extend the ItemToPurchase class to contain a new attribute. item_description (string) - Set to "none" in default constructor Implement the following method for the ItemToPurchase class. print_item_description() - Prints item_description attribute for an ItemToPurchase object. Has an ItemToPurchase parameter. Example of print_item_description() output:Bottled Water: Deer Park, 12 oz. Build the ShoppingCart class with the following data attributes and related methods. Note: Some can be method stubs (empty methods) initially, to be completed in later steps. Parameterized constructor…True or false: Just as a class can have multiple constructors, it can also have multiple destructors.
- class Course { private String courseNumber; private String courseName; private int creditHrs; public Course (String number, String name, int creditHrs){ this.courseNumber = number; this.courseName = name; this.creditHrs = creditHrs; } public String getNumber() { return courseNumber; } public String getName() { return courseName; } public int getCreditHrs() { return creditHrs; } public void setCourseNumber(String courseNumber) { this.courseNumber = courseNumber; } public void setCourseName(String courseName) { this.courseName = courseName; } public void setCreditHrs(int creditHrs) { this.creditHrs = creditHrs; }}class Student { private String firstName; private String lastName; private String gender; private String phoneNumber; private String email; private String jNumber; protected ArrayList courseList; public String getFullName() {…class IndexItem { public: virtual int count() = 0; virtual void display()= 0; };class Book : public IndexItem { private: string title; string author; public: Book(string title, string author): title(title), author(author){} virtual int count(){ return 1; } virtual void display(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };class Category: public IndexItem { private: /* fill in the private member variables for the Category class below */ ? int count; public: Category(string name, string code): name(name), code(code){} /* Implement the count function below. Consider the use of the function as depicted in main() */ ? /* Implement the add function which fills the category with contents below. Consider the use of the function as depicted in main() */ ? virtualvoiddisplay(){ /* YOU DO NOT NEED TO IMPLEMENT THIS FUNCTION */ } };this is my retail item code: //Import statements public class RetailItem { private String description; private int units; private double price; public RetailItem() { } public RetailItem(String x, int y, double z) { description = x; units = y; price = z; } public RetailItem(RetailItem i) { } public void setDescription(String x) { description = x; } public void setPrice(double z) { price = z; } void setUnits(int y) { units = y; } public int getUnits() { return units; } public String getDescription() { return description; } public double getPrice() { return price; } // Main class public static void main(String[] args) { String str = "Shirt"; RetailItem r1 = new RetailItem("Jacket", 12,…
- Hands-on Activity Blood Bank (Part 1) Objective: At the end of the activity, the student should be able to: Create and overload constructors. Procedure: Develop a simple program that stores a patient's blood Create two (2) classes named BloodData (no class modifier) and RunBloodData (public). For the BloodData class: declare two (2) static String fields named bloodType for accepting (O, A, B, and AB) and rhFactor (stands for Rhesus factor, an inherited protein found on the surface of red blood cells) for accepting + and -. For the default constructor (public) of the BloodData class, set bloodType to "O" and rhFactor to '+'. Create an overloaded constructor (public) with two (2) String parameters: bt and rh. In this constructor, bloodType should store bt while rhFactor should store rh. Create a public method named display. This method will be used to display the values of bloodType and rhFactor. In the RunBloodData class, import the Scanner class for the user input. In the main…"CommissionEmployee" class: package commissions; import employees.Employee; public class CommissionEmployee extends Employee { private double gross_sales; private double rate; public CommissionEmployee(String fname, String lname, String SSN, double gross_sales, double rate) { super(fname, lname, SSN); this.gross_sales = gross_sales; this.rate = rate; } public double getGross_sales() { return gross_sales; } public void setGross_sales(double gross_sales) { this.gross_sales = gross_sales; } public double getRate() { return rate; } public void setRate(double rate) { this.rate = rate; } public double earnings() { return gross_sales*rate; } @Override public String toString() { return super.toString()+"[gross_sales=" + gross_sales + ", rate=" + rate + "]"; } } Update the code in JAVA to include the following: "BasePlusCommissionEmployee" class that inherits from "CommissionEmployee" class. A BasePlusCommissionEmployee has a…Consider the following class definition: class circle { public: void print() const; void setRadius(double); void setCenter(double, double); void getCenter(double&, double&); double getRadius(); double area(); circle(); circle(double, double, double); double, double); private: double xCoordinate; double yCoordinate; double radius; } class cylinder: public circle { public: void print() const; void setHeight(double); double getHeight(); double volume(); double area(); cylinder(); cylinder(double, double, private: double height; } Suppose that you have the declaration: cylinder newCylinder; Write the definitions of the member functions of the classes circle and cylinder. Identify the member functions of the class cylinder that overrides the member functions of the class circle
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