1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
seraphim [82]
3 years ago
9

4. Write an interface ObjectWithTwoParameters which has a method specification: double area (double d1, double d2) which returns

the area of a particular object. Write three classes RectangleClass, TriangleClass, and CylinderClass which implement the interface you created. Also, write a demo class which creates objects of RectangleClass, TriangleClass, and CylinderClass and call the corresponding methods
Computers and Technology
1 answer:
il63 [147K]3 years ago
8 0

Answer:

The java program for the given scenario is as follows.

import java.util.*;

//interface with method area

interface ObjectWithTwoParameters

{

double area (double d1, double d2);

}

class RectangleClass implements ObjectWithTwoParameters

{

//overriding area()

public double area (double d1, double d2)

{

return d1*d2;

}

}

class TriangleClass implements ObjectWithTwoParameters

{

//overriding area()

public double area (double d1, double d2)

{

return (d1*d2)/2;

}  

}

class CylinderClass implements ObjectWithTwoParameters

{

public double area (double d1, double d2)

{

return ( 2*3.14*d1*d1 + d2*(2*3.14*d1) );

}

}

public class Test

{

public static void main(String[] args)

{

//area displayed for all three shapes

ObjectWithTwoParameters r = new RectangleClass();

double arear = r.area(2, 3);

System.out.println("Area of rectangle: "+arear);

ObjectWithTwoParameters t = new TriangleClass();

double areat = t.area(4,5);

System.out.println("Area of triangle: "+areat);

ObjectWithTwoParameters c = new CylinderClass();

double areac = c.area(6,7);

System.out.println("Area of cylinder: "+areac);

}

}

OUTPUT

Area of rectangle: 6.0

Area of triangle: 10.0

Area of cylinder: 489.84

Explanation:

1. The program fulfils all the mentioned requirements.

2. The program contains one interface, ObjectWithTwoParameters, three classes which implement that interface, RectangleClass, TriangleClass and CylinderClass, and one demo class, Test, containing the main method.

3. The method in the interface has no access specifier.

4. The overridden methods in the three classes have public access specifier.

5. No additional variables have been declared.

6. The test class having the main() method is declared public.

7. The area of the rectangle, triangle and the cylinder have been computed as per the respective formulae.

8. The interface is similar to a class which can have only declarations of both, variables and methods. No method can be defined inside an interface.

9. The other classes use the methods of the interface by implementing the interface using the keyword, implements.

10. The object is created using the name of the interface as shown.

ObjectWithTwoParameters r = new RectangleClass();

You might be interested in
Examine about the Internal & External Fragmentation methods give an example for each. essay​
Tju [1.3M]

Internal Fragmentation occurs when a process needs more space than the size of allotted memory block or use less space. External Fragmentation occurs when a process is removed from the main memory. Internal Fragmentation occurs when Paging is employed. External Fragmentation occurs when Segmentation is employed.

3 0
3 years ago
A data mart is the operational database for the company. group of answer choices true false
netineya [11]

The statement 'a data mart is the operational database for the company' is true.

We can define a data mart as a  subject-oriented database that focuses on a particular area in an organization.

It is through data mart that the employees of a company can access data faster. Data mart, functioning as the operational database, helps employees as they do not have to manually add all the data again. Also, any piece of data needed by an employee can easily be accessed through the data mart of the company.

One of the advantages of using data mart is that it eradicates human-made errors which can arise if data is added manually by an employee.

To learn more about data mart, click here:

brainly.com/question/25013185

#SPJ4

8 0
2 years ago
SOMEONE PLEASE HELP ME OUT !!!!!!
GrogVix [38]

Answer:

not completly sure but i believe its the one that says inform the coach of where the goalies weak area...

Explanation:

8 0
2 years ago
Write an application for Cody’s Car Care Shop that shows a user a list of available services: oil change, tire rotation, battery
Firdavs [7]

An application for Cody’s Car Care:

#include <iostream>

#include <string>

#include <vector>

using namespace std;

int main()

{

vector<string>stroptions(4);

stroptions[0] = "Oil Change";

stroptions[1] = "Tire Rotation";

stroptions[2] = "Battery Check";

stroptions[3] = "Brake Inspection";

 

vector<int> intprices(4);

intprices[0] = 45;

intprices[1] = 22;

intprices[2] = 15;

intprices[3] = 10;

 

int option;

cout<< "Welcome to Joe's Car Care Shop!" <<endl;

cout<< "Choose a service from our menu:" <<endl;

for(int i = 1; i<= 4; i++)

{

  cout<< "#" <<i<< ": " <<stroptions[i-1] <<endl;

}

cout<< "Choice: ";

bool loop = true;

while(loop)

{

  loop = false;

  cin>> option;

 switch(option)

  {

   case 1:

     cout<< "\nA " <<stroptions[option-1] << " will be: $" <<intprices[option -1] <<endl;

     break;

   case 2:  

     cout<< "\nA " <<stroptions[option -1] << " will be: $" <<intprices[option -1] <<endl;

     break;

   case 3:

     cout<< "\nA " <<stroptions[option -1] << " will be: $" <<intprices[option -1] <<endl;

     break;

   case 4:

     cout<< "\nA " <<stroptions[option -1] <<" will be: $" << intprices[option -1] <<endl;

      break;

    default:

     cout<< "\nYou entered an invalid item! Try again!" <<endl;

     loop = true;

     break;

 }

}

}

3 0
3 years ago
Write a script named dif.py. This script should prompt the user for the names of two text files and compare the contents of the
mestny [16]

Answer:

Following are the code to this question:

f1=input('Input first file name: ')#defining f1 variable that input file 1

f2=input('Input second file name: ')#defining f2 variable that input file 2

file1=open(f1,'r')#defining file1 variable that opens first files by using open method  

file2=open(f2,'r')#defining file1 variable that opens second files by using open method  

d1=file1.readlines()#defining d1 variable that use readlines method to read first file data

d2=file2.readlines()#defining d2 variable that use readlines method to read second file data

if d1==d2:#defining if block that check file data

   print('Yes')#when value is matched it will print message yes  

   exit# use exit keyword for exit from if block

for j in range(0,min(len(d1),len(d2))):#defining for loop that stores the length of the file  

   if (d1[j]!=d2[j]):#defining if block that check value is not matched

       print('No')#print the message "NO"

       print("mismatch values: ",d1[j]," ",d2[j])#print file values

Output:

please find the attached file.

Explanation:

code description:

  • In the above code, the "f1 and f2" variable is used for input value from the user end, in which it stores the file names. In the next step, the "file1 and file2" variable is declared that uses the open method to open the file.
  • In the next line, the"d1 and d2" variable is declared for reads file by using the "readlines" method.
  • Then, if block is used that uses the "d1 and d2" variable to match the file value if it matches it will print "yes", otherwise a for loop is declared, that prints files mismatch values.

8 0
3 years ago
Other questions:
  • In a switch statement, if a break statement is missing, _______________. Select one: a. the default case is automatically execut
    15·1 answer
  • Which of the following statements is true about scalability? Choose 3 options.
    9·2 answers
  • "Simon Says" is a memory game where "Simon" outputs a sequence of 10 characters (R, G, B, Y) and the user must repeat the sequen
    5·2 answers
  • Double[][] vals =
    8·1 answer
  • you have a small network in your business with just a few network devices connected along with 22 linux computers and you want t
    7·1 answer
  • write a C program the prints out the size of variables with the following C data types- int, long, unsigned, long long, double,
    7·1 answer
  • What are the trinity of the computer system
    15·1 answer
  • Naynar kis dhrm se sambandhit hai​
    15·2 answers
  • Assume you are using the text's array-based queue and have just instantiated a queue of capacity 10. You enqueue 5 elements and
    13·1 answer
  • If you added the formula =SUM(B1:B5) to a spreadsheet, what would it do?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!