class Background: public DisplayObject | { public: //constructor Background(const std::string& filename):

A field has access that is somewhere between public and private. static final Opackage Oprotected

class Student:    def __init__(self, id, fn, ln, dob, m='undefined'):        self.id = id        self.firstName = fn        self.lastName = ln        self.dateOfBirth = dob        self.Major = m    def set_id(self, newid): #This is known as setter        self.id = newid    def get_id(self): #This is known as a getter        return self.id    def set_fn(self, newfirstName):        self.fn = newfirstName    def get_fn(self):        return self.fn    def set_ln(self, newlastName):        self.ln = newlastName    def get_ln(self):        return self.ln    def set_dob(self, newdob):        self.dob = newdob    def get_dob(self):        return self.dob    def set_m(self, newMajor):        self.m = newMajor    def get_m(self):        return self.m    def print_student_info(self):        print(f'{self.id} {self.firstName} {self.lastName} {self.dateOfBirth} {self.Major}')all_students = []id=100user_input = int(input("How many students: "))for x in range(user_input):    firstName = input('Enter…

class implementation file -- Rectangle.cpp class Rectangle { #include #include "Rectangle.h" using namespace std; private: double width; double length; public: void setWidth (double); void setLength (double) ; double getWidth() const; double getLength() const; double getArea () const; } ; // set the width of the rectangle void Rectangle::setWidth (double w) { width = w; } // set the length of the rectangle void Rectangle::setLength (double l) { length l; //get the width of the rectangle double Rectangle::getWidth() const { return width; // more member functions here

Java script.    class Chameleon { static colorChange(newColor) { this.newColor = newColor; return this.newColor; } constructor({ newColor = 'green' } = {}) { this.newColor = newColor; } } const freddie = new Chameleon({ newColor: 'purple' }); console.log(freddie.colorChange('orange'));.

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,…

class Container {private int val1=1;private void printValue(){final int val2=2;class Containee{public void f(){System.out.println(String.format("Values are: %d and %d."),val1);}}}public static void main(String[] args) {(new Container()).printValue();}}   a.The above does not compile because the method f() requires an instance of class Container b.The above does not compile because the class definition in done within the body of the function c.The above code complies with no errors, but does not produce any ouput d.The above code does not compile because the methodf() cannot access the variable val1