- a constructor that takes two values corresponding to the xcoord and ycoord values and sets them accordingly
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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:
In C#, How would you compile the necessary code to define a class that will store a point in space. It will need the following data members: xcoord, ycoord. Include the following methods:
- a default constructor that will set the coordinates to 0,0
- a constructor that takes two values corresponding to the xcoord and ycoord values and sets them accordingly
- accessor methods to get and set the values of the coordinates (you can use properties if you wish)
- a display constructor that returns a string in the format of (xcoord, ycoord)
Usage of the class:
//create an instance of 2 points
Point myPoint = new Point;
//assign values using properties |If you do not declare properties for the data items, you might do the following
myPoint.Xcoord = 42; |myPoint.SetX(42);
myPoint.Ycoord = 19.63; |myPoint.SetY(19.63)
// use the Display() method
WriteLine(“The point is “+myPoint.Display()); //output The point is (42, 19.63)
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- Write Rectangle class to represent a rectangle. The class contains:a. Two double data fields named width and height that specify the width and height ofthe rectangle. The default values are 1 for both width and height.b. A no-arg constructor that creates a default rectangle.c. A constructor that creates a rectangle with the specified width and height.d. A method named getArea() that returns the area of this rectangle.e. A method named getPerimeter() that returns the perimeter.In this exercise, you have to create a class called Point which can calculate distance between two points in the x-y plane. Problem Statement# You have to implement a class called Point that represents a specific point in the x-y plane. It should contain the following: ● fields: ○ x( integer type) ○ y( integer type) ● methods: ○ default constructor that initializes the point at (0,0)(0, 0)(0,0) ○ parameterized constructor that takes input x and y and initializes the point to the respective coordinates. ○ float distance(), a method which calculates the distance of the point (represented by the object) from the origin, i.e. (0,0)(0, 0)(0,0) ○ float distance(x1, y1), a method which calculates the distance between the point represented by the class object and (x1,y1)(x1, y1)(x1,y1) Sample Input# Point p1 = new Point(5, 5); Sample Output# distance() => 7.071 distance(2, 1) => 5.0 Part of the solution import java.lang.Math; class Point { // Private fields private int x;…Write a program named DemoJobs for Harolds Home Services. The program should instantiate several Job objects and demonstrate their methods. The Job class contains four data fields—description (for example, wash windows), time in hours to complete (for example, 3.5), per-hour rate charged (for example, $25.00), and total fee (hourly rate times hours). Include properties to get and set each field except the total fee—that field will be read-only, and its value is calculated each time either the hourly fee or the number of hours is set. Overload the + operator so that two Jobs can be added. The sum of two Jobs is a new Job containing the descriptions of both original Jobs (joined by and), the sum of the time in hours for the original Jobs, and the average of the hourly rate for the original Jobs. Harold has realized that his method for computing the fee for combined jobs is not fair. For example, consider the following: His fee for painting a house is $100 per hour. If a job takes 10 hours, he earns $1000. His fee for dog walking is $10 per hour. If a job takes 1 hour, he earns $10. If he combines the two jobs and works a total of 11 hours, he earns only the average rate of $55 per hour, or $605. Devise an improved, weighted method for calculating Harolds fees for combined Jobs and include it in the overloaded operator+() method. Write a program named DemoJobs2 that demonstrates all the methods in the class work correctly.
- In previous chapters, you have created programs for the Greenville Idol competition. Now create a Contestant class with the following characteristics: The Contestant class contains public static arrays that hold talent codes and descriptions. Recall that the talent categories are Singing Dancing, Musical instrument, and Other. The class contains an auto-implemented property that holds a contestants name. The class contains fields for a talent code and description. The set accessor for the code assigns a code only if it is valid. Otherwise, it assigns I for Invalid. The talent description is a read-only property that is assigned a value when the code is set. Modify the GreenvilleRevenue program so that it uses the Contestant class and performs the following tasks: The program prompts the user for the number of contestants in this years competition; the number must be between 0 and 30. The program continues to prompt the user until a valid value is entered. The expected revenue is calculated and displayed. The revenue is $25 per contestant. The program prompts the user for names and talent codes for each contestant entered. Along with the prompt for a talent code, display a list of the valid categories. After data entry is complete, the program displays the valid talent categories and then continuously prompts the user for talent codes and displays the names of all contestants in the category. Appropriate messages are displayed if the entered code is not a character or a valid code.a. Write a FractionDemo program that instantiates several Fraction objects and demonstrates that their methods work correctly. Create a Fraction class with fields that hold a whole number, a numerator, and a denominator. In addition: Create properties for each field. The set access or for the denominator should not allow a 0 value; the value defaults to 1. Add three constructors. One takes three parameters for a whole number, numerator, and denominator. Another accepts two parameters for the numerator and denominator; when this constructor is used, the whole number value is 0. The last constructor is parameterless; it sets the whole number and numerator to 0 and the denominator to 1. (After construction, Fractions do not have to be reduced to proper form. For example, even though 3/9 could be reduced to 1/3, your constructors do not have to perform this task.) Add a Reduce() method that reduces a Fraction if it is in improper form. For example, 2/4 should be reduced to 1/2. Add an operator+() method that adds two Fractions. To add two fractions, first eliminate any whole number part of the value. For example, 2 1/4 becomes 9/4 and 1 3/5 becomes 8/5. Find a common denominator and convert the fractions to it. For example, when adding 9/4 and 8/5, you can convert them to 45/20 and 32/20. Then you can add the numerators, giving 77/20. Finally, call the Reduce() method to reduce the result, restoring any whole number value so the fractional part of the number is less than 1. For example, 77/20 becomes 3 17/20. Include a function that returns a string that contains a Fraction in the usual display format—the whole number, a space, the numerator, a slash (D, and a denominator. When the whole number is 0, just the Fraction part of the value should be displayed (for example, 1/2 instead of 0 1/2). If the numerator is 0, just the whole number should be displayed (for example, 2 instead of 2 0/3). b. Add an operator*() method to the Fraction class created in Exercise 11a so that it correctly multiplies two Fractions. The result should be in proper, reduced format. Demonstrate that the method works correctly in a program named FractionDemo2. c. Write a program named FractionDem03 that includes an array of four Fractions. Prompt the user for values for each. Display every possible combination of addition results and every possible combination of multiplication results for each Fraction pair (that is, each type will have 16 results).Write Rectangle class to represent a rectangle. The class contains:a. Two double data fields named width and height that specify the width and height ofthe rectangle. The default values are 1 for both width and height.b. A no-arg constructor that creates a default rectangle.c. A constructor that creates a rectangle with the specified width and height.d. A method named getArea() that returns the area of this rectangle.e. A method named getPerimeter() that returns the perimeter. in Java
- INSTRUCTIONS: Write a C++ script/code to do the given problem. Write a class called profileID, which has data members firstName,lastName, age, birthday and ageCompany (the age when you entered in the company). Remember to use set and get methods to access the data members this time. Also, write another class called bonusAward that has a method getBonus()with arguments yos and etype which are both integer data types. This method calculates the bonus received by an employee using this formula: yos*1000 + etype*1000. Write two derived classes, ASE and SE, using multiple inheritance usingprofileID and bonusAward as parent classes. Both classes must have amethod named getyos()that returns the yos of an employee using the formula age–ageCompany; and a method named getetype() which returns a constant based on the employee type. For ASE, the constant is 10 while for SE that constant is 20. Last, write a main program where you instantiate ASE as employee1 and SE as employee2. Get their…Must be written in Python. Please include docstring and show how output should look like. Remember that all data members should be private. An object can access it's own private data members directly. It can also access the private data members of other objects of the same class directly. But when accessing a private data member of an object of another class, it needs to call the appropriate get method. If that sounds complicated, just remember this: if a method is in the same class as a private data member, then it can access that data member directly, otherwise, it needs to use a get method. Write a class named Point that has two data members, x_coord and y_coord, representing the two coordinates of the point. It should have: an init method that takes two arguments, an x-coordinate and y-coordinate (in that order), and uses them to initialize the two data members. get methods for the two data members: get_x_coord and get_y_coord. a method named distance_to that takes a Point object…Create a class called Polar for performing Polar coordinates. Define all the necessary variables to represent the private part. Provide a constructor that enables an object of this class to be initialized when it's declared. Provide any method that you believe it is needed. Furthermore, provide methods that perform each of the following A. Operator +. This function adds two polar points. R= The summation of their distance while Theta = The biggest angle between the two points. B. Operator -. This functions calculates the angle between two polar points. Write a program to test your class. Define an array of objects with size 5 by using the memory allocation technique and fill it with data. (a) Use the function + to add the 1" and the 3 polar points. (b) Use the function - to find the difference between the 2 and the 4 polar points angles. In C++
- Create an car class that will be used by a car shop to keep track of inventory. The following attributes should be present in your automobile class: -private string make-private string model-private string color-private int year-private int mileage. The program should have methods such as: -default constructor-parameterized constructor-add a new vehicle method-list vehicle information (return string array)-remove a vehicle method-update vehicle attributes method. All methods should include try..catch constructs. Except as noted all methods should return a success or failure message (failure message defined in "catch"). 1. Create an additional class to call your automobile class (e.g., Main or AutomobileInventory). Include a try..catch construct and print it to the console. 2. Call automobile class with parameterized constructor (e.g., "make, model, color, year, mileage").a) Then call the method to list the values. Loop through the array and print to the screen. 3. Call the remove…please use java to answer the following question Design and implement a class named Triangle that extends GeometricObject. The class contains: Three double data fields named side1, side2, and side3 with default values 1.0 to denote three sides of the triangle. A no-arg constructor that creates a default triangle. A constructor that creates a triangle with the specified side1, side2, and side3. The accessor methods for all three data fields. A method named getPerimeter() that returns the perimeter of this triangle. A method named toString() that returns a string description for the triangle. The toString() method is implemented as follows: return "Triangle: side1 = " + side1 + " side2 = " + side2 + " side3 = " + side3; Write a test program that prompts the user to enter three sides of the triangle, a color, and a boolean value to indicate whether the triangle is filled. The program should create a Triangle object with these sides and set the color and filled properties…Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four pieces of information as instance variable Part number(type String) Part description(type String) Quantity of the item being purchased (type int) Price per item (double). Your class should have a constructor that initializes the four instance variables. Provide a set and a get method for each instance variable. In addition, provide a method named getInvoice Amount that calculates the invoice amount (i.e., multiplies the quantity by the price per item), then returns the amount as a double value. If the quantity is not positive, it should be set to 0. If the price per item is not positive, it should be set to 0.0. Write a test application named InvoiceTest that demonstrates class Invoice’s capabilities.
