a) write what this code does step by step, outling the use of methods, class, variables and any other key information. provide commenrted code with explanation in every step
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a) write what this code does step by step, outling the use of methods, class, variables and any other key information.
provide commenrted code with explanation in every step
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- In C++ class rectangleType { public: void setLengthWidth(double x, double y); //Sets the length = x; width = y; void print() const; //Output length and width double area(); //Calculate and return the area of the rectangle (length*width) double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private: double length; double width; }; Set the length of the rectangle to 24 and the width to 30.# Coding - Simulate a robot Write a program that simulates the movements of a robot. The robot can have three possible movements: turn right turn left advance The robot is placed on a hypothetical infinite grid, facing a particular direction (north, east, south, or west) at a set of `{x,y}` coordinates,e.g., `{3,8}`, with coordinates increasing to the north and east. Create a Class `Robot` that contains a method `execute` which given a number of instructions will calculate the robot's new position, and the the direction in which it is pointing. ## Example The letter-string "RAALAL" means: Turn right Advance twice Turn left Advance once Turn left yet again Say a robot starts at `{7, 3}` facing north. Running this stream of instructions should leave it at `{9, 4}` facing west. ## Inputs and Outputs The argument of the `execute` is `string` in the format `X Y BEARING COMMANDS`. The method should return a one-liner `string` in the format `X Y BEARING`. In the…Problem (Circle.java) CREATE A CIRCLE.JAVA PROGRAM Instructions: a. Implement a class called Circle for representing a circle. The circle has two data members, a Point object representing the center of the circle and a float value representing the radius. b. Include appropriate constructors for your Circle class. c. Encapsulate it. d. Also include methods for finding the area and circumference of the circle. area = pi * radius * radius circumference = 2 * pi * radius. (You may use the static constant pi in the Math class) e. Override the toString() and equals().f. Write a simple main method that creates Circle objects and tests each of the methods that you have defined.
- In C++ class rectangleType { public: void setLengthWidth(double x, double y); //Sets the length = x; width = y; void print() const; //Output length and width double area(); //Calculate and return the area of the rectangle (length*width) double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private: double length; double width; }; Print out the area of the rectangle.In C++ class rectangleType { public: void setLengthWidth(double x, double y); //Sets the length = x; width = y; void print() const; //Output length and width double area(); //Calculate and return the area of the rectangle (length*width) double perimeter(); //Calculate and return the perimeter (length of outside boundary of the rectangle) private: double length; double width; }; Declare an instance of rectangleType.Design Patterns: Strategy Pattern : in Object Oriented design Programming Use Netbeans to execute the following Java code and show SCREENSHOTS to verify that the program runs correctly. Draw a UMl class diagram to model the program. Here is the java code: File : Billing.java public interface Billing { public double getDiscount();} File : LoyaltyBilling.java public class LoyaltyBilling implements Billing{ @Override public double getDiscount() { return 20.00; } } File : NormalBilling.java public class NormalBilling implements Billing{ @Override public double getDiscount() { return 0; } } File : SeasonalBilling.java public class SeasonalBilling implements Billing{ @Override public double getDiscount() { return 10; } } File :SaleBilling.java public class SaleBilling implements Billing{ @Override public double getDiscount() { return 50; } } File : Product.java public class Product { private String name; private…
- Use Java Programming Language Please Provide a Code that works Properly Loan Account Class: Create class LoanAccount. Use a static variable annualInterestRate to store the annual interest rate for all account holders. Each object of the class contains a private instance variable principal indicating the amount the person is borrowing. Provide method: public double calculateMonthlyPayment(int numberOfPayments) to calculate the monthly payment by using the following formula: double monthlyPayment = principal * ( monthlyInterest / (1 - Math.pow(1 + monthlyInterest, -numberOfPayments))); where monthly interest = annualInterestRate/12. Provide a static method setAnnualInterestRate that sets the annualInterestRate to a new value. Set the initial loan amount (Principal) for a new loan through the constructor. Write a program to test class LoanAccount. Instantiate two LoanAccount objects, loan1 and loan2, with principal loan amounts of $5000.00 and $31000.00, respectively. Set…Python Programming- Invoice Class Introduction: Requires creating classes and instantiating objects from created class Instructions: 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 data attributes--a part number (a string), a part description (a string), a quantity of the item being purchased (an int.) and a price per item (a Decimal). Your class shold have an __init__ method that intializes the four data ttributes. Provide a property for each data attribute. The quantity and price per item should each be non-negative--use validation in the properties for these data attributes to ensure that they remain valid. Provide a calculate_invoice method that returns the invoice amount (that is, multiplies the quantity by the price per item). Demonstrate class Invoice's capabilities. Once you have written the class, write a program that creates two Invoice Objects to hold…JAVA CLASS AND OBJECT Write a program that creates a "Car" as an object, and displays the Year and Model in a one method “Speed”. Output to be displayed: Year: 2021 Model: Toyota Speed: 200km/h
- public class worksheet3_1 { public static void main(String[] arg) { ShadowingExample example = new ShadowingExample(); example.x = 99; example.sampleMethod(); }}class ShadowingExample { int x; public void sampleMethod() { int x = 0; System.out.println("the value of local variable x = " + ………………………………………………); System.out.println("the value of instance variable x = " + …………………………………………); }} what should be written in the second print statement so that the output is: the value of instance variable x = 99 what should be written in the first print statement so that the output is: the value of local variable x = 0 options are: samplemethod.x this.x shadowingexample.x x Answer 1 Question 1JAVAclass: Main.java, Quadratic.java, TestQuadratic.java Create a class called Quadratic for representing a one-variable quadratic expression of the form: ax2 + bx + c a,b and c here are the coefficients. The class should contain the following methods: * A constructor that accepts values for a, b, and c. * public double getA() * public double getB() * public double getC() * public double evaluate (int x) * will return the value of the expression at point x * public double discriminant() - that will return (b2 - 4ac) * public boolean isImaginaryRoots() - roots are imaginary if (b2 - 4ac) < 0 * public boolean isRealRoots() - roots are real if (b2 - 4ac) >= 0 // these methods can only be invoked if the roots are not imaginary * public float firstRoot() * public float secondRoot() * public boolean isPerfectSquare(); // If the first and second roots are equal * Try to override the toString methods * Write a sample main program that will work as shown below. Example output:…Define a class method (static) named compare to the Fraction class. The compare method accepts two Fraction objects f1 and f2. The method returns -1 if f1 is less than f2 O if f1 is equal to f2 +1 if f1 is greater than f2 in java