Nuances of the Scanner Class
I'm having trouble with the Scanner class... here is a snippet of code from a program I am writing.
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1System.out.print("Enter the name of the new passenger-> ");
2String passengerName = scan.nextLine();
3System.out.println(passengerName);
4
5System.out.print("Enter the ticket type (E or F)-> ");
6String desiredClassType = scan.nextLine();
7System.out.println(desiredClassType);
8char desiredClassTypeCode = (desiredClassType.toUpperCase()).charAt(0);
9
10
11System.out.print("Enter the desired row-> ");
12int desiredRow = scan.nextInt();
13System.out.println(desiredRow);
14
15System.out.print("Enter the desired seat-> ");
16String desiredSeat = scan.nextLine();
17System.out.println(desiredSeat);
18char desiredSeatCode = desiredSeat.charAt(0);
19
20System.out.print("Smoking or non-smoking (S or N)-> ");
21String desiredSmoking = scan.nextLine();
22System.out.println(desiredSmoking);
23char desiredSmokingCode = (desiredSmoking.toUpperCase()).charAt(0);
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The problem is, after the scan.nextInt() on line 12, the user never gets a chance to enter input for the scan.nextLine() on line 16. The program just plows right on through and returns the following error at line 18:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0
If I change the scan.nextLine() in line 16 to scan.next(), it works alright until the next time I call a scan.nextLine at line 21. Then the same error message appears at line 23. Is there something I'm missing? I can't just change everything to scan.next because some inputs require a string that includes whitespace. However, scan.nextLine keeps giving me these errors...?
