public class FactorialCalculator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number: ");
int number = scanner.nextInt();
scanner.close();
long factorial = calculateFactorial(number);
System.out.println("The factorial of " + number + " is: " + factorial);
}
public static long calculateFactorial(int number) {
if (number == 0 || number == 1) {
return 1;
} else {
long factorial = 1;
for (int i = 2; i <= number; i++) {
factorial *= i;
}
return factorial;
}
}
}
Java Factorial Calculator
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Sure! Here's an example of a simple Java application that calculates the factorial of a number:
java
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import java.util.Scanner;
public class FactorialCalculator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number: ");
int number = scanner.nextInt();
scanner.close();
long factorial = calculateFactorial(number);
System.out.println("The factorial of " + number + " is: " + factorial);
}
public static long calculateFactorial(int number) {
if (number == 0 || number == 1) {
return 1;
} else {
long factorial = 1;
for (int i = 2; i <= number; i++) {
factorial *= i;
}
return factorial;
}
}
}
In this application, the user is prompted to enter a number. The program then calculates the factorial of the entered number using the calculateFactorial() method. The factorial calculation is done using a for loop.
To compile and run this Java application, save the code in a file named FactorialCalculator.java. Then open a command prompt or terminal, navigate to the directory where the file is located, and run the following commands:
javac FactorialCalculator.java
java FactorialCalculator
The program will ask you to enter a number, and after entering the number, it will display the factorial of that number.
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