Answer:
The program in Java is as follows;
import java.util.*;
public class Main{
public static int getFactorial(int num){
int fact = 1;
for(int i =1;i<=num;i++){
fact*=i;
}
return fact;
}
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Number: ");
int num = input.nextInt();
System.out.println(num+"! = "+getFactorial(num)); }}
Explanation:
The method begins here
public static int getFactorial(int num){
This initializes the factorial to 1
int fact = 1;
This iterates through each digit of the number
for(int i =1;i<=num;i++){
Each of the digits are then multiplied together
fact*=i; }
This returns the calculated factorial
return fact; }
The main begins here
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
This prompts the user for number
System.out.print("Number: ");
This gets input from the user
int num = input.nextInt();
This passes the number to the function and also print the factorial
System.out.println(num+"! = "+getFactorial(num)); }}
