finished implementing Factorial, began implementing IsInteger

src/main/java/factorial/Factorial.java

@@ -12,9 +12,34 @@ What number would you like to compute the factorial for? 4
 24
 */
 
+// TODO: Make tests for this class
+
+import java.util.Scanner;
+
 public class Factorial {
+		public static int factorial(int n)
+		{
+				// Base case
+				if (n < 1) return n;
+
+				// Recursive
+				return n * factorial(n - 1);
+		}
 
     public static void main(String[] args) {
+				Scanner scan = new Scanner(System.in);
+				int input;
+				int result;
 
+				System.out.print("What number would you like to computer the factorial for? ");
+				input = scan.nextInt();
+
+				result = factorial(input);
+
+				// Print the result
+				System.out.println(result);
+
+				// Close the scanner
+				scan.close();
     }
 }

src/main/java/isInteger/IsInteger.java

@@ -8,6 +8,12 @@ public class IsInteger {
 		//    It is an integer if all of the characters in the string are digits.
 		//
 		//    Return true if it is an integer, or false if it is not.
-//
+		public static isInteger(String input)
+		{
+
+				// Check if you can convert
+				
+
+		}
 
 }