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factorial program in java

All rights reserved. What is the Factorial of a Number? The factorial is normally used in Combinations and Permutations (mathematics). Here, instead of long, we use BigInteger variable factorial. There are many ways to write the factorial program in java language. 1) using for loop 2) using while loop 3) finding factorial of a number entered by user. factorial program using for loop. Published in the Java Developer group . In this tutorial, we shall learn how to write Java programs to find factorial of a given number. For example: Here, 4! Java program to find factorial Given below is the java program to find factorial of the given number. In the above program, unlike a for loop, we have to increment the value of i inside the body of the loop. © Copyright 2011-2018 www.javatpoint.com. Find the factorial of a number is one of the common java interview question. n! Now, we will develop the Java program to find factorial value using the recursion technique. is: 1 * 2 * 3 * … (n-1) * n Java Program to Find Factorial of a Number. This is a Java program to find the factorial of a Number using for loop. Also, factorial of 0 is 1 and it is not defined for negative integers. It was a basic Java program to calculate factorial of a given number, which calls findFactorial() method to calculate the factorial value. Ltd. All rights reserved. To understand this example, you should have the knowledge of the following Java programming topics: The factorial of a positive number n is given by: In this program, we've used for loop to loop through all numbers between 1 and the given number num (10), and the product of each number till num is stored in a variable factorial. What is Factorial of Number?