For this lab you will write a class to create a user-defined type called Shapes to represent different shapes, their perimeters and their areas. The class should have three fields: shape, which is of type string, and perimeter and area of type double. The program will have to be able to calculate perimeters and areas for circles, triangles, squares and rectangles, which are the known shapes.
2.1 Constructors
Write these constructors:
1. Default constructor that sets the shape to "unknown" and the perimeter and area to 0
2. Constructor with one parameter, shape, that sets the shape, other fields are 0
2.2 Accessors & Mutators
Write the following member methods:
1. setShape()
Modifies the shape field
2. getShape()
Returns the shape field
3. getPerimeter()
Returns the perimeter field
4. getArea()
Returns the area field
Arithmetic Methods in Interface
Write the following member methods to perform arithmetic:
1. setPerimeter(Scanner scnr)
Depending on the shape, prompts the user for appropriate variables (ie width & height for a square, radius for a circle, etc.) and calculates the perimeter of the appropriate shape. The perimeter field should be updates with the new value. If the shape is unknown, then print to the screen that the user must first define a shape before a perimeter can be calculated and set the perimeter to 0.
2. setArea(Scanner scnr)
Depending on the shape, prompts the user for appropriate variables (ie width & height for a square, radius for a circle, etc.) and calculates the area of the appropriate shape. The area field should be updates with the new value. If the shape is unknown, then print to the screen that the user must first define a shape before an area can be calculated and set the area to 0.
2.3 Additional Methods
Create two additional methods of your choice. Be sure to clearly label both of these methods as your own.
2.4 Using another .java file called ShapesTest.java that tests that all of your methods work correctly

========= Shape.java  ===========

//import the Scanner class

import java.util.Scanner;

public class Shape{

   //required fields

  private String shape;

   private double area;

   private double perimeter;

   //default constructor

  public Shape(){

       this.shape = "unknown";

       this.area = 0.0;

       this.perimeter = 0.0;

   }

   //constructor with one parameter

   public Shape(String shape){

       this.setShape(shape);

       this.area = 0.0;

       this.perimeter = 0.0;

   }

   //accessors and mutators

  public void setShape(String shape){

       this.shape = shape;

   }

  public String getShape(){

       return this.shape;

   }

   public double getPerimeter(){

       return this.perimeter;

   }

  public double getArea(){

       return this.area;

   }

  public void setPerimeter(Scanner scr){

       if(this.getShape().equals("circle")){

           System.out.println("Enter the radius of the circle");

           double radius = scr.nextDouble();

           this.perimeter = 2 * 3.142 * radius;

       }

       else if(this.getShape().equals("rectangle")){

           System.out.println("Enter the width");

           double width = scr.nextDouble();

           System.out.println("Enter the height");

           double height = scr.nextDouble();

           this.perimeter = 2 * (width + height);

       }

       else if(this.getShape().equals("square")){

           System.out.println("Enter the height or width");

           double height = scr.nextDouble();

           this.perimeter = 4 * height;

       }

       else if(this.getShape().equals("unknown")){

           System.out.println("You must define a shape first before calculating perimeter");

           this.perimeter = 0.0;

       }

       else {

           System.out.println("You must define a shape first before calculating perimeter");

           this.perimeter = 0.0;

       }

   }

   public void setArea(Scanner scr){

       if(this.getShape().equals("circle")){

           System.out.println("Enter the radius of the circle");

           double radius = scr.nextDouble();

           this.area = 3.142 * radius * radius;

       }

       else if(this.getShape().equals("rectangle")){

           System.out.println("Enter the width");

           double width = scr.nextDouble();

           System.out.println("Enter the height");

           double height = scr.nextDouble();

           this.area = width * height;

       }

       else if(this.getShape().equals("square")){

           System.out.println("Enter the height or width");

           double height = scr.nextDouble();

           this.area = height * height;

       }

       else if(this.getShape().equals("unknown")){

           System.out.println("You must define a shape first before calculating area");

           this.area = 0.0;

       }

       else {

           System.out.println("You must define a shape first before calculating area");

           this.area = 0.0;

       }

   }

   //Own methods

   //1. Method to show the properties of a shape

   public void showProperties(){

       System.out.println();

       System.out.println("The properties of the shape are");

       System.out.println("Shape : " + this.getShape());

       System.out.println("Perimeter : " + this.getPerimeter());

       System.out.println("Area : " + this.getArea());

   }

   //2. Method to find and show the difference between the area and perimeter of a shape

   public void getDifference(){

       double diff = this.getArea() - this.getPerimeter();

       System.out.println();

       System.out.println("The difference is " + diff);

   }

}

========= ShapeTest.java  ===========

import java.util.Scanner;

public class ShapeTest {

   public static void main(String [] args){

       Scanner scanner = new Scanner(System.in);

       // create an unknown shape

       Shape shape_unknown = new Shape();

       //get the shape

       System.out.println("The shape is " + shape_unknown.getShape());

       //set the area

       shape_unknown.setArea(scanner);

       //get the area

       System.out.println("The area is " + shape_unknown.getArea());

       //set the perimeter

       shape_unknown.setPerimeter(scanner);

       //get the perimeter

       System.out.println("The perimeter is " + shape_unknown.getPerimeter());

       // create another shape - circle

       Shape shape_circle = new Shape("circle");

       //set the area

       shape_circle.setArea(scanner);

       //get the area

       System.out.println("The area is " + shape_circle.getArea());

       //set the perimeter

       shape_circle.setPerimeter(scanner);

       //get the area

       System.out.println("The perimeter is " + shape_circle.getArea());

       //get the properties

       shape_circle.showProperties();

       //get the difference between area and perimeter

       shape_circle.getDifference();

   }

}

The shape is unknown

You must define a shape first before calculating area

The area is 0.0

You must define a shape first before calculating perimeter

The perimeter is 0.0

Enter the radius of the circle

>> 12

The area is 452.448

Enter the radius of the circle

>> 12

The perimeter is 452.448

The properties of the shape are

Shape : circle

Perimeter : 75.408

Area : 452.448

The difference is 377.03999999999996

The code above is written in Java. It contains comments explaining important parts of the code. Please go through the code for more explanations. For better formatting, the sample output together with the code files have also been attached to this response.

define the term hardwar

​

If you want to continue working on your web page the next day, what should you do?

a. Create a copy of the file and make changes in that new copy

b. Start over from scratch with a new file

c. Once a file has been saved, you cannot change it

d. Reopen the file in your text editor to

What is output? public class MathRecursive { public static void myMathFunction(int a, int r, int counter) { int val; val = a*r; System.out.print(val+" "); if (counter > 4) { System.out.print("End"); } else { myMathFunction(val, r, counter + 1); } } public static void main (String [] args) { int mainNum1 = 1; int mainNum2 = 2; int ctr = 0; myMathFunction(mainNum1, mainNum2, ctr); } }
a) 2 4 8 16 32 End
b) 2 2 2 2 2
c) 2 4 8 16 32 64 End
d) 2 4 8 16 32

Define a class Complex to represent complex numbers. All complex numbers are of the form x + yi, where x and y are real numbers, real numbers being all those numbers which are positive, negative, or zero.

What is the meaning of integreted progam and it examples​

Write a Python code that takes two sequences CATCGTCCT and CACCGACCG and prints the point mutations found when aligning the two sequences. Tip: you simply need to write a for loop to go over the length of the sequences, pick a letter from each position,and, compare the two sequences position by position for matches and report the mismatches.

Write a C++ function for the following:
Suppose that Account class has a method called withdraw, which will be inherited by Checking and Savings class. The withdraw method will perform according to account type. So, the late bind is needed. Declare the withdraw method in Account class. The method should take a double input as withdraw amount and output true if the withdraw successfully and false if the withdraw unsuccessfully.

Ten output devices you know

An A record contains what

What is digital marketing?

(The Person, Student, Employee, Faculty, and Staff classes) Design a class named Person and its two subclasses named Student and Employee. Make Faculty and Staff subclasses of Employee. A person has a name, address, phone number, and email address.A student has a class status (freshman, sophomore, junior, or senior). Define the status as a constant. An employee has

The new software organization requires a new point of sale and stock control system for their many stores throughout Pakistan to replace their aging mini-based systems.
A sales assistant will be able to process an order by entering product numbers and required quantities into the system. The system will display a description, price, and available stock. In-stock products will normally be collected immediately by the customer from the store but may be selected for delivery to the customer's home address for which there will be a charge. If stock is not available, the sales assistant will be able to create a backorder for the product from a regional warehouse. The products will then either be delivered directly from the regional warehouse to the customer's home address, or the store for collection by the customer. The system will allow products to be paid for by cash or credit card. Credit card transactions will be validated via an online card transaction system. The system will produce a receipt. Order details for in-stock products will be printed in the warehouse including the bin reference, quantity, product number, and description. These will be collected by the sales assistant and given to the customer. The sales assistant will be able to make refunds, provided a valid receipt is produced. The sales assistant will also be able to check stock and pricing without creating an order and progress orders that have been created for delivery.
You need to answer the following questions. (Marks 6)
1. Which elicitation method or methods appropriate to discover the requirement for a given scenario system to work efficiently, where multiple sales and stock points manage. Justify your answer with examples.
2. Identify all stakeholders for a given scenario according to their roles and responsibilities with suitable justifications.
3. Specify functional users and systems requirements with proper justifications.

help asapp!!!!!! give the technical name means (write the name in one word) . the feature of virus which copies itself..​

Ling has configured a delegate for her calendar and would like to ensure that the delegate is aware of their permissions. Which option should she configure?

Delegate can see my private Items
Tasks > Editor
Inbox > None
Automatically send a message to delegate summarizing these permissions

A list is sorted in ascending order if it is empty or each item except the last one is less than or equal to its successor.

a. True
b. False

Imagine that you are helping to build a store management system for a fast food restaurant. Given the following lists, write a program that asks the user for a product name. Next, find out if the restaurant sells that item and report the status to the user. Allow the user to continue to inquire about product names until they elect to quit the program.

Recall the binary search algorithm.1. Using the algorithm/algorithmic environment, give pseudocode using a for loop.AnswerMy algorithm for binary search using a for loop is given in Algorithm 1.Algorithm 1BinarySearchFor(A)[[XXX TODO:pseudocode here]]2. Using the algorithm/algorithmic environment, give pseudocode using a while loop.Answer[[XXX TODO:your answer here]]3. Using the algorithm/algorithmic environment, give pseudocode using recursion.Answer[[XXX TODO:your answer here]]4. What is the loop invariant of your second algorithm

Write a c++ to read seven days in an array and print it

Write a program that demonstrates how various exceptions are caught with catch(Exception exception). This time define classes ExceptionA (which inherits from class Exception) and ExceptionB (which inherits from class ExceptionA). In your program, create try blocks that throw exceptions of types ExceptionA, ExceptionB, NullPointerException and IOException. All exceptions should be caught with catch blocks specifying type Exception.

In Word, when you conduct a merge a customized letter, envelope, label is created for each record in the data source. True or False.

In the recursive function findMatch(), the first call is findMatch(array, 0, 4, key) . What are the remaining function calls to find the character 'e'?
public class FindMatch {
public static int findMatch(char array[], int low, int high, char key) {
if (high >= low) {
int mid = low + (high - low) / 2;
if (array[mid] == key) {
return mid;
}
if (array[mid] > key) {
return findMatch(array, low, mid, key);
}
else {
return findMatch(array, mid + 1, high, key);
}
}
return -1;
}
public static void main(String args[]){
char array[] = {'a','b','c','d','e'};
char key = 'e';
int result = findMatch(array, 0, 4, key);
if (result == -1) {
System.out.println("Element not found!");
}
else {
System.out.println("Element found at index: " + result);
}
}
}
a. (array, 2, 4, key) and (array, 3, 4, key)
b. (array, 2, 4, key), (array, 3, 4, key) and (array, 4, 4, key)
c. (array, 3, 4, key)
d. (array, 3, 4, key) and (array, 4, 4, key)

web analytics can tell you many things about your online performance, but what can analytics tools not tell you​

You will write code to manipulate strings using pointers but without using the string handling functions in string.h. Do not include string.h in your code. You will not get any points unless you use pointers throughout both parts.
You will read in two strings from a file cp4in_1.txt at a time (there will be 2n strings, and you will read them until EOF) and then do the following. You alternately take characters from the two strings and string them together and create a new string which you will store in a new string variable. You may assume that each string is no more than 20 characters long (not including the null terminator), but can be far less. You must use pointers. You may store each string in an array, but are not allowed to treat the string as a character array in the sense that you may not have statements like c[i] = a[i], but rather *c *a is allowed. You will not get any points unless you use pointers.
Example:
Input file output file
ABCDE APBQCRDSETFG
PQRSTFG arrow abcdefghijklmnopgrstuvwxyz
acegikmoqsuwyz
bdfhjlnprtvx

Which statement is correct?
Flat files use foreign keys to uniquely identify tables.

Flat files use foreign keys to secure data.

A foreign key is a primary key in another table.

A foreign key uniquely identifies a record in a table.

4 reasons why users attach speakers
to their computers​

Discusstheimportanceofbackingupdatainorganizations,pointingoutthebenefits
ofcloudbackupoption​

How can the adoption of a data platform simplify data governance for an organization?

Means having a current knowledge and understanding of computer mobile devices the web and related technologies

Look at the code below and use the following comments to indicate the scope of the static variables or functions. Place the comment below the relevant line.

Module scope
Class scope
Function scope

#include
2
3 static const int MAX_SIZE=10;
4
5 // Return the max value
6 static double max(double d1)
7 {
8 static double lastMax = 0;
9 lastMax = (d1 > lastMax) ? d1 : lastMax;
10 return lastMax;
11 }
12
13 // Singleton class only one instance allowed
14 class Singleton
15 {
16 public:
17 static Singleton& getSingleton() { return theOne; }
18 // Returns the Singleton
19

Simon has a folder that's just a little too large for his thumb drive. How can he make the folder smaller without deleting the contents? *