Java Scanner - why do I get this error?

Question

I'm not new to java, but I cannot figure out why I get this Scanner error. The code compiles fine, but I get the following runtime error

Enter item number: Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Scanner.java:840) at java.util.Scanner.next(Scanner.java:1461) at java.util.Scanner.nextInt(Scanner.java:2091) at java.util.Scanner.nextInt(Scanner.java:2050) at TestInvoice.getValues(TestInvoice.java:3

Answer 1

Perhaps change

Scanner scanner = new Scanner("System.in");

to

Scanner scanner = new Scanner(System.in);