Calculate Factorial of Number in Java Programming
Here, we have listed How To Calculate Factorial of Number in Java Programming Language. It is important that we should know How A For Loop Works before getting further with the Java Program Code.
What is a Factorial of an Integer?
A Factorial for a Non-Negative Number or Integer is the Product of all the Positive Integers Less than or Equal to that Number.
6! = 6 * 5 * 4 * 3 * 2 * 1 = 720
Also Read: Java Program To Find Palindrome Numbers
Method 1: Calculate Factorial of Number in Java using While Loop
public static void main(String args) throws Exception
int fact = 1, num, count;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("\nEnter an Integer:");
num = Integer.parseInt(br.readLine());
for(count = num;count > 0;count--)
fact = fact * count;
System.out.println("\nFactorial of " + num + ":\t" + fact);
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