Factorial

Find factorial of a number using a loop.

BeginnerTopic: Module 3: Loop Programs
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Java Factorial Program

This program helps you to learn the fundamental structure and syntax of Java programming.

Try This Code
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter n: ");
        int n = sc.nextInt();

        long fact = 1;
        for (int i = 1; i <= n; i++) {
            fact *= i;
        }

        System.out.println("Factorial = " + fact);
        sc.close();
    }
}
Output
Enter n: 5
Factorial = 120

Understanding Factorial

We multiply numbers from 1 to n to compute n!.

Note: To write and run Java programs, you need to set up the local environment on your computer. Refer to the complete article Setting up Java Development Environment. If you do not want to set up the local environment on your computer, you can also use online IDE to write and run your Java programs.

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