John Code

That's an assignment. You need 2 equals. Like this: if(sc.next() == "help"). Edit: Actually, you should probably use String.equals() for this. Not the == operator.

I believe the problem is your First for loop. The variable i is being set to the value of a[0], then a[1], etc. If a[0] equals 200, you're asking it to check a[200].