java program to get factorial of a number

Java Program to find factorial of a number

The calculation of factorial is pretty much an example of recursion technique in programming. 

But there is a drawback that the recursion isn't memory efficient if you don't care about it, it isn't the problem for you. 

It's a choice to save the time of a programmer.

The factorial of any number that is n > 1  multiplied by the factorial of n - 1. See the implementation.

for example

factorial(4)

4 * factorial(3)

4 * 3 * factorial(2)

4 * 3 * 2 * factorial(1)

The factorial of a positive integer x is equal to the product of all positive integers from 1 to x inclusively. 

Also by definition, the factorial of 0 is 1.

download or see the complete code for calculating the factorial of a number in java