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Java Programming help at HelpWithAssignment.com (Factorial Example)

by Sir on March 31, 2011

Java is one of the most popular Programming languages in use today in Application software and Web Applications. It is a general-purpose, concurrent, class based and object oriented language that is specifically designed to have implementation dependencies as possible.

Java Factorial Example

This Java Factorial Example shows how to calculate factorial of a given number using Java.

public class NumberFactorial {

public static void main(String[] args) {

 int number = 5;

                        /*

                        * Factorial of any number is !n.

                        * For example, factorial of 4 is 4*3*2*1.

                        */

 int factorial = number;

 for(int i =(number – 1); i > 1; i–)

                        {                                  

                        factorial = factorial * i;

                        }

                        System.out.println(“Factorial of a number is ” + factorial);

            }

}

Here in the code we can see that in the first few lines the definition for a factorial is defined. Now, this definition is being applied in the following lines as “int factorial = number” or factorial of an integer equals to the number – 1; the number must be greater than 1 and the integer i is decremented by 1 until 1 is arrived at. The next process is the multiplication of the numbers obtained. This is seen in factorial = factorial*i. This will give the exact value of the factorial.

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