/in/Main.java:2: error: class Factorial is public, should be declared in a file named Factorial.java
public class Factorial {
       ^
/in/Main.java:17: error: cannot find symbol
        Scanner in = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Factorial
/in/Main.java:17: error: cannot find symbol
        Scanner in = new Scanner(System.in);
                         ^
  symbol:   class Scanner
  location: class Factorial
3 errors