Question

Write a program by using a class with the following specifications: 

Class name: Factorial
Data Members: private int n
Member Methods:
void input(): to input a number
void fact(): to find and print the factorial of the number.

Use a main function to create an object and call member methods of the class. 

Answer 1

import java.util.*;
class Factorial
{ private int n;
void input)
{Scanner ob = new Scanner(System.in);
System.out.println("Enter a number");
n = ob.nextInt();
}
void fact()
{int fct = 1;
for (int i = 1; i <= n; i++)
fct = fct * i;
System.out.println("Factorial: " + fct);
}
public static void main(String jK[])
{ Factorial F = new Factorial();
F.input();
F.fact();
}}